diff --git a/modules/contacts_demo/contacts_demo.info.yml b/modules/contacts_demo/contacts_demo.info.yml
new file mode 100644
index 0000000..ef7a3c1
--- /dev/null
+++ b/modules/contacts_demo/contacts_demo.info.yml
@@ -0,0 +1,7 @@
+name: Contacts Demo
+type: module
+description: 'Generate demo content for contacts.'
+package: Contacts
+core: '8.x'
+dependencies:
+  - contacts
\ No newline at end of file
diff --git a/modules/contacts_demo/contacts_demo.links.menu.yml b/modules/contacts_demo/contacts_demo.links.menu.yml
new file mode 100644
index 0000000..136efff
--- /dev/null
+++ b/modules/contacts_demo/contacts_demo.links.menu.yml
@@ -0,0 +1,5 @@
+contacts_demo.generate:
+  title: 'Generate demo contacts'
+  description: 'Generate and remove demo content for the contacts module.'
+  route_name: contacts_demo.generate
+  parent: 'system.admin_config_development'
diff --git a/modules/contacts_demo/contacts_demo.links.task.yml b/modules/contacts_demo/contacts_demo.links.task.yml
new file mode 100644
index 0000000..6aefb68
--- /dev/null
+++ b/modules/contacts_demo/contacts_demo.links.task.yml
@@ -0,0 +1,9 @@
+contacts_demo.generate:
+  route_name: contacts_demo.generate
+  base_route: contacts_demo.generate
+  title: 'Generate'
+
+contacts_demo.generate_delete:
+  route_name: contacts_demo.generate_delete
+  base_route: contacts_demo.generate
+  title: 'Delete'
diff --git a/modules/contacts_demo/contacts_demo.routing.yml b/modules/contacts_demo/contacts_demo.routing.yml
new file mode 100644
index 0000000..418fc2d
--- /dev/null
+++ b/modules/contacts_demo/contacts_demo.routing.yml
@@ -0,0 +1,15 @@
+contacts_demo.generate:
+  path: '/admin/config/development/contacts-demo'
+  defaults:
+    _form: '\Drupal\contacts_demo\Form\GenerateForm'
+    _title: 'Generate Demo Contacts'
+  requirements:
+    _permission: 'administer site configuration'
+
+contacts_demo.generate_delete:
+  path: '/admin/config/development/contacts-demo/delete'
+  defaults:
+    _form: '\Drupal\contacts_demo\Form\GenerateDeleteForm'
+    _title: 'Delete Demo Contacts'
+  requirements:
+    _permission: 'administer site configuration'
diff --git a/modules/contacts_demo/contacts_demo.services.yml b/modules/contacts_demo/contacts_demo.services.yml
new file mode 100644
index 0000000..81ecd95
--- /dev/null
+++ b/modules/contacts_demo/contacts_demo.services.yml
@@ -0,0 +1,10 @@
+services:
+  contacts_demo.yaml_parser:
+    class: \Drupal\contacts_demo\DemoContentParser
+    arguments: ~
+  plugin.manager.demo_content:
+    class: \Drupal\contacts_demo\DemoContentManager
+    parent: default_plugin_manager
+  plugin.manager.demo_flavour:
+    class: Drupal\contacts_demo\DemoFlavourManager
+    arguments: ['@module_handler']
diff --git a/modules/contacts_demo/content/entity/file.yml b/modules/contacts_demo/content/entity/file.yml
new file mode 100644
index 0000000..ff64a21
--- /dev/null
+++ b/modules/contacts_demo/content/entity/file.yml
@@ -0,0 +1,22 @@
+---
+636d6ded-c1fd-47c4-b43a-02054a0ba17d:
+  uuid: 636d6ded-c1fd-47c4-b43a-02054a0ba17d
+  langcode: en
+  path: content/files/file79KuSX.jpg
+  uri: public://file79KuSX.jpg
+  filemime: image/jpeg
+  status: 1
+71bf39b6-868b-4d7b-a76e-ee34534ddd82:
+  uuid: 71bf39b6-868b-4d7b-a76e-ee34534ddd82
+  langcode: en
+  path: content/files/fileAEmLXi.jpg
+  uri: public://fileAEmLXi.jpg
+  filemime: image/jpeg
+  status: 1
+d06145bb-e63c-474a-9326-99f44a6e6936:
+  uuid: aa51ee1e-dee0-11e5-b86d-9a79f06e9478
+  langcode: en
+  path: content/files/fileaZZVtU.jpg
+  uri: public://fileaZZVtU.jpg
+  filemime: image/jpeg
+  status: 1
diff --git a/modules/contacts_demo/content/entity/user.yml b/modules/contacts_demo/content/entity/user.yml
new file mode 100644
index 0000000..2bb04d4
--- /dev/null
+++ b/modules/contacts_demo/content/entity/user.yml
@@ -0,0 +1,43 @@
+---
+75d9689e-3227-4f16-a5bf-5a179f70978d:
+  uuid: 75d9689e-3227-4f16-a5bf-5a179f70978d
+  mail: susanna.ramirez@example.com
+  user_name: blackrabbit442
+  decoupled: 1
+  status: 1
+  picture: 636d6ded-c1fd-47c4-b43a-02054a0ba17d
+  roles:
+    - crm_indiv
+  full_name: "Mrs Susanna Ramirez"
+  gender: female
+  dob: 1979-03-18
+  phone: "07000 142124"
+  address: "7645 Mill Road|Portsmouth|J0T 2SA|United Kingdom"
+ec2d9ca0-6e85-4023-b056-6368e865f274:
+  uuid: ec2d9ca0-6e85-4023-b056-6368e865f274
+  mail: rich.rhodes@example.com
+  user_name:
+  decoupled: 0
+  status: 1
+  picture: 71bf39b6-868b-4d7b-a76e-ee34534ddd82
+  roles:
+    - crm_indiv
+  full_name: "Mr Rich Rhodes"
+  gender: male
+  dob: 1986-10-22
+  phone: "07000 832892"
+  address: "7034 The Grove|Carlisle|D74 8XW|United Kingdom"
+283ce822-c4c8-4f5e-9b44-a87c5228cf25:
+  uuid: 283ce822-c4c8-4f5e-9b44-a87c5228cf25
+  mail: eleanor.mccoy@example.com
+  user_name:
+  decoupled: 0
+  status: 1
+  picture: d06145bb-e63c-474a-9326-99f44a6e6936
+  roles:
+    - crm_indiv
+  full_name: "Miss Eleanor Mccoy"
+  gender: female
+  dob: 1964-09-27
+  phone: "07000 844870"
+  address: "4295 Station Road|Sunderland|M19 7GX|United Kingdom"
\ No newline at end of file
diff --git a/modules/contacts_demo/content/files/file79KuSX.jpg b/modules/contacts_demo/content/files/file79KuSX.jpg
new file mode 100644
index 0000000..5c3569b
Binary files /dev/null and b/modules/contacts_demo/content/files/file79KuSX.jpg differ
diff --git a/modules/contacts_demo/content/files/fileAEmLXi.jpg b/modules/contacts_demo/content/files/fileAEmLXi.jpg
new file mode 100644
index 0000000..15e3d67
Binary files /dev/null and b/modules/contacts_demo/content/files/fileAEmLXi.jpg differ
diff --git a/modules/contacts_demo/content/files/fileaZZVtU.jpg b/modules/contacts_demo/content/files/fileaZZVtU.jpg
new file mode 100644
index 0000000..b6a30e2
Binary files /dev/null and b/modules/contacts_demo/content/files/fileaZZVtU.jpg differ
diff --git a/modules/contacts_demo/flavours/complex.yml b/modules/contacts_demo/flavours/complex.yml
new file mode 100644
index 0000000..715a589
--- /dev/null
+++ b/modules/contacts_demo/flavours/complex.yml
@@ -0,0 +1,4 @@
+id: complex
+label: Complex
+description: "Complex contacts manifest for simple demo."
+supported: false
diff --git a/modules/contacts_demo/flavours/default.yml b/modules/contacts_demo/flavours/default.yml
new file mode 100644
index 0000000..61e89d5
--- /dev/null
+++ b/modules/contacts_demo/flavours/default.yml
@@ -0,0 +1,9 @@
+id: default
+label: Default
+description: "Default contacts manifest for simple demo."
+supported: true
+files:
+  user:
+    - content/entity/user.yml
+  file:
+    - content/entity/file.yml
\ No newline at end of file
diff --git a/modules/contacts_demo/src/Annotation/DemoContent.php b/modules/contacts_demo/src/Annotation/DemoContent.php
new file mode 100644
index 0000000..71e57b9
--- /dev/null
+++ b/modules/contacts_demo/src/Annotation/DemoContent.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace Drupal\contacts_demo\Annotation;
+
+use Drupal\Component\Annotation\Plugin;
+
+/**
+ * Defines a DemoContent annotation object.
+ *
+ * @Annotation
+ */
+class DemoContent extends Plugin {
+
+  /**
+   * The plugin ID.
+   *
+   * @var string
+   */
+  public $id;
+
+  /**
+   * The content type label.
+   *
+   * @var string
+   */
+  public $label;
+
+  /**
+   * The source file.
+   *
+   * @var string
+   */
+  public $source;
+
+  /**
+   * The entity type id.
+   *
+   * @var string
+   */
+  public $entityType;
+
+}
diff --git a/modules/contacts_demo/src/DemoContent.php b/modules/contacts_demo/src/DemoContent.php
new file mode 100644
index 0000000..2c6ac30
--- /dev/null
+++ b/modules/contacts_demo/src/DemoContent.php
@@ -0,0 +1,144 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Core\Entity\EntityStorageInterface;
+use Drupal\Core\Plugin\PluginBase;
+
+abstract class DemoContent extends PluginBase implements DemoContentInterface {
+
+  /**
+   * Contains the created content.
+   *
+   * @var array
+   */
+  protected $content = [];
+
+  /**
+   * Contains data from a file.
+   *
+   * @var array
+   */
+  protected $data = [];
+
+  /**
+   * Contains source files.
+   *
+   * @var array
+   */
+  protected $source = [];
+
+  /**
+   * Parser.
+   *
+   * @var \Drupal\contacts_demo\DemoContentParserInterface
+   */
+  protected $parser;
+
+  /**
+   * Contains the entity storage.
+   *
+   * @var \Drupal\Core\Entity\EntityStorageInterface
+   */
+  protected $entityStorage;
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getSource() {
+    return $this->source;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getModule() {
+    $definition = $this->getPluginDefinition();
+    return isset($definition['provider']) ? $definition['provider'] : NULL;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function removeContent() {
+    $data = $this->fetchData();
+
+    foreach ($data as $uuid => $item) {
+      // Must have uuid and same key value.
+      if ($uuid !== $item['uuid']) {
+        continue;
+      }
+
+      $entities = $this->entityStorage->loadByProperties([
+        'uuid' => $uuid,
+      ]);
+
+      foreach ($entities as $entity) {
+        $entity->delete();
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function count() {
+    return count($this->content);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setEntityStorage(EntityStorageInterface $entity_storage) {
+    $this->entityStorage = $entity_storage;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function setSource($source) {
+    $this->source = $source;
+  }
+
+  /**
+   * Gets the data from a file.
+   */
+  protected function fetchData() {
+    if (!$this->data) {
+      foreach ($this->getSource() as $source) {
+        $this->data = array_merge($this->data, $this->parser->parseFile($source, $this->getModule()));
+      }
+    }
+    return $this->data;
+  }
+
+  /**
+   * Load entity by uuid.
+   *
+   * @param string $entity_type_id
+   * @param string $uuid
+   * @param bool $all
+   * @return \Drupal\Core\Entity\EntityInterface|\Drupal\Core\Entity\EntityInterface[]|mixed
+   */
+  protected function loadByUuid($entity_type_id, $uuid, $all = FALSE) {
+    $storage = \Drupal::entityTypeManager()->getStorage($entity_type_id);
+    $entities = $storage->loadByProperties([
+      'uuid' => $uuid,
+    ]);
+
+    if (!$all) {
+      return current($entities);
+    }
+
+    return $entities;
+  }
+
+  /**
+   * Makes an array with data of an entity.
+   *
+   * @param array $item
+   * @return array
+   */
+  abstract protected function getEntry($item);
+
+}
diff --git a/modules/contacts_demo/src/DemoContentInterface.php b/modules/contacts_demo/src/DemoContentInterface.php
new file mode 100644
index 0000000..e44a198
--- /dev/null
+++ b/modules/contacts_demo/src/DemoContentInterface.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Component\Plugin\PluginInspectionInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+use Drupal\Core\Entity\EntityStorageInterface;
+
+interface DemoContentInterface extends PluginInspectionInterface, ContainerFactoryPluginInterface {
+
+  /**
+   * Returns the file name.
+   *
+   * @return string
+   *   The source filename where are data.
+   */
+  public function getSource();
+
+  /**
+   * Returns the module name.
+   *
+   * @return string
+   *   The module name where is placed file with data.
+   */
+  public function getModule();
+
+  /**
+   * Creates content.
+   *
+   * @return array
+   *   An array with list of created entities.
+   */
+  public function createContent();
+
+  /**
+   * Removes content.
+   */
+  public function removeContent();
+
+  /**
+   * Returns quantity of created items.
+   *
+   * @return int
+   */
+  public function count();
+
+  /**
+   * Set source array.
+   *
+   * @param array $source
+   */
+  public function setSource($source);
+
+  /**
+   * Set entity storage.
+   *
+   * @param \Drupal\Core\Entity\EntityStorageInterface $entity_storage
+   */
+  public function setEntityStorage(EntityStorageInterface $entity_storage);
+
+}
diff --git a/modules/contacts_demo/src/DemoContentManager.php b/modules/contacts_demo/src/DemoContentManager.php
new file mode 100644
index 0000000..e05d5a0
--- /dev/null
+++ b/modules/contacts_demo/src/DemoContentManager.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+
+class DemoContentManager extends DefaultPluginManager {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    parent::__construct(
+      'Plugin/DemoContent',
+      $namespaces,
+      $module_handler,
+      'Drupal\contacts_demo\DemoContentInterface',
+      'Drupal\contacts_demo\Annotation\DemoContent'
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createInstance($plugin_id, array $configuration = array()) {
+    /** @var \Drupal\contacts_demo\DemoContentInterface $plugin */
+    $plugin = parent::createInstance($plugin_id, $configuration);
+    $definition = $plugin->getPluginDefinition();
+    $storage = \Drupal::entityTypeManager()->getStorage($definition['entity_type']);
+    $plugin->setEntityStorage($storage);
+//    dpm($configuration);
+    if (!empty($configuration['source'])) {
+      $plugin->setSource($configuration['source']);
+    }
+
+    return $plugin;
+  }
+
+  /**
+   * Create multiple instances.
+   *
+   * @param array $plugin_ids
+   *   Identifiers of plugins.
+   * @param array $configurations
+   *   Array with configuration for all plugins.
+   * @return array
+   *   Array with instances of the plugins.
+   */
+  public function createInstances($plugin_ids, array $configurations = []) {
+    $instances = [];
+
+    foreach ($plugin_ids as $plugin_id) {
+      $configuration = isset($configurations[$plugin_id]) ? $configurations[$plugin_id] : [];
+      $instances[$plugin_id] = static::createInstance($plugin_id, $configuration);
+    }
+
+    return $instances;
+  }
+
+}
diff --git a/modules/contacts_demo/src/DemoContentParser.php b/modules/contacts_demo/src/DemoContentParser.php
new file mode 100644
index 0000000..1612bb4
--- /dev/null
+++ b/modules/contacts_demo/src/DemoContentParser.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Symfony\Component\Yaml\Yaml;
+
+class DemoContentParser extends Yaml implements DemoContentParserInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getPath($file, $module) {
+    return drupal_get_path('module', $module) . DIRECTORY_SEPARATOR . $file;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function parseFile($file, $module) {
+    return $this->parse($this->getPath($file, $module));
+  }
+
+}
diff --git a/modules/contacts_demo/src/DemoContentParserInterface.php b/modules/contacts_demo/src/DemoContentParserInterface.php
new file mode 100644
index 0000000..9b20c25
--- /dev/null
+++ b/modules/contacts_demo/src/DemoContentParserInterface.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+interface DemoContentParserInterface {
+
+  /**
+   * Returns the path for the given file.
+   *
+   * @param string $file
+   *   The filename.
+   * @param string $module
+   *   The module where the Yaml file is placed.
+   *
+   * @return string
+   *   String with the full pathname including the file.
+   */
+  public function getPath($file, $module);
+
+  /**
+   * Parses YAML file into a PHP value.
+   *
+   * @param string $file
+   *   The filename.
+   * @param string $module
+   *   The module where the Yaml file is placed.
+   *
+   * @return mixed
+   *   The YAML converted to a PHP value.
+   */
+  public function parseFile($file, $module);
+
+}
diff --git a/modules/contacts_demo/src/DemoEntity.php b/modules/contacts_demo/src/DemoEntity.php
new file mode 100644
index 0000000..40580f9
--- /dev/null
+++ b/modules/contacts_demo/src/DemoEntity.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Symfony\Component\DependencyInjection\ContainerInterface;
+//use Drush\Log\LogLevel;
+
+abstract class DemoEntity extends DemoContent {
+
+  /**
+   * DemoEntity constructor.
+   * @param array $configuration
+   * @param mixed $plugin_id
+   * @param $plugin_definition
+   * @param \Drupal\contacts_demo\DemoContentParserInterface $parser
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, DemoContentParserInterface $parser) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->parser = $parser;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('contacts_demo.yaml_parser')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createContent() {
+    $data = $this->fetchData();
+    $entity_type_id = $this->entityStorage->getEntityTypeId();
+
+    foreach ($data as $uuid => $item) {
+      // Must have uuid and same key value.
+      if ($uuid !== $item['uuid']) {
+//        drush_log(dt("{$entity_type_id} with uuid: {$uuid} has a different uuid in content."), LogLevel::ERROR);
+        continue;
+      }
+
+      // Check whether comment with same uuid already exists.
+      $entities = $this->entityStorage->loadByProperties([
+        'uuid' => $uuid,
+      ]);
+
+      if ($entities) {
+//        drush_log(dt("{$entity_type_id} with uuid: {$uuid} already exists."), LogLevel::WARNING);
+        continue;
+      }
+
+      $entry = $this->getEntry($item);
+      $entity = $this->entityStorage->create($entry);
+      $entity->save();
+
+      if ($entity->id()) {
+        $this->content[ $entity->id() ] = $entity;
+      }
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntry($item) {
+    $entry = [
+      'uuid' => $item['uuid'],
+    ];
+
+    return $entry;
+  }
+
+}
diff --git a/modules/contacts_demo/src/DemoFile.php b/modules/contacts_demo/src/DemoFile.php
new file mode 100644
index 0000000..d422cc1
--- /dev/null
+++ b/modules/contacts_demo/src/DemoFile.php
@@ -0,0 +1,108 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+//use Drupal\image_widget_crop\ImageWidgetCropManager;
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+//use Drush\Log\LogLevel;
+//use Drupal\crop\Entity\CropType;
+
+abstract class DemoFile extends DemoContent {
+
+  /**
+   * The entity type manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManager;
+
+  /**
+   * DemoFile constructor.
+   * @param array $configuration
+   * @param string $plugin_id
+   * @param mixed $plugin_definition
+   * @param \Drupal\contacts_demo\DemoContentParserInterface $parser
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, DemoContentParserInterface $parser, EntityTypeManagerInterface $entity_type_manager) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->parser = $parser;
+    $this->entityTypeManager = $entity_type_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('contacts_demo.yaml_parser'),
+      $container->get('entity_type.manager')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createContent() {
+    $data = $this->fetchData();
+
+    foreach ($data as $uuid => $item) {
+      // Must have uuid and same key value.
+      if ($uuid !== $item['uuid']) {
+//        drush_log(dt("File with uuid: {$uuid} has a different uuid in content."), LogLevel::ERROR);
+        continue;
+      }
+
+      // Check whether file with same uuid already exists.
+      $files = $this->entityStorage->loadByProperties([
+        'uuid' => $uuid,
+      ]);
+
+      if ($files) {
+//        drush_log(dt("File with uuid: {$uuid} already exists."), LogLevel::WARNING);
+        continue;
+      }
+
+      // Copy file from module.
+      $item['uri'] = file_unmanaged_copy(
+        $this->parser->getPath($item['path'], $this->getModule()),
+        $item['uri'],
+        FILE_EXISTS_REPLACE
+      );
+
+      $item['uid'] = NULL;
+      $entry = $this->getEntry($item);
+      $entity = $this->entityStorage->create($entry);
+      $entity->save();
+
+      if (!$entity->id()) {
+        continue;
+      }
+
+      $this->content[ $entity->id() ] = $entity;
+    }
+
+    return $this->content;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntry($item) {
+    $entry = [
+      'uuid' => $item['uuid'],
+      'langcode' => $item['langcode'],
+      'uid' => $item['uid'],
+      'status' => $item['status'],
+      'uri' => $item['uri'],
+    ];
+
+    return $entry;
+  }
+
+}
diff --git a/modules/contacts_demo/src/DemoFlavour.php b/modules/contacts_demo/src/DemoFlavour.php
new file mode 100644
index 0000000..17a9e0e
--- /dev/null
+++ b/modules/contacts_demo/src/DemoFlavour.php
@@ -0,0 +1,178 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\Core\Plugin\PluginBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+class DemoFlavour extends PluginBase implements DemoFlavourInterface {
+
+  /**
+   * The Entity Type Manager.
+   *
+   * @var \Drupal\Core\Entity\EntityTypeManagerInterface
+   */
+  protected $entityTypeManger;
+
+
+  /**
+   * The Demo Content Manager.
+   *
+   * @var \Drupal\contacts_demo\DemoContentManager
+   */
+  protected $demoContentManager;
+
+  /**
+   * Constructs a Migration.
+   *
+   * @param array $configuration
+   *   Plugin configuration.
+   * @param string $plugin_id
+   *   The plugin ID.
+   * @param mixed $plugin_definition
+   *   The plugin definition.
+   * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager
+   *   The Entity Type Manager.
+   * @param \Drupal\contacts_demo\DemoContentManager $demo_content_manager
+   *   The Demo Content Manager.
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, EntityTypeManagerInterface $entity_type_manager, DemoContentManager $demo_content_manager) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+    $this->entityTypeManger = $entity_type_manager;
+    $this->demoContentManager = $demo_content_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('entity_type.manager'),
+      $container->get('plugin.manager.demo_content')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getLabel() {
+    return (string) $this->pluginDefinition['label'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getDescription() {
+    return (string) $this->pluginDefinition['description'];
+  }
+  
+  /**
+   * {@inheritdoc}
+   */
+  public function getModule() {
+    $definition = $this->getPluginDefinition();
+    return isset($definition['provider']) ? $definition['provider'] : NULL;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFiles() {
+    $definition = $this->getPluginDefinition();
+
+    $files = [];
+    foreach ($definition['files'] as $type => $paths) {
+      $files[] = [
+        'type' => $type,
+        'paths' => $paths,
+      ];
+    }
+    return $files;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function count() {
+    // @todo count total entities in manifest.
+    return 10;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function generate() {
+    $this->generateElements();
+    drupal_set_message('Generate process complete.');
+  }
+  
+  /**
+   * {@inheritdoc}
+   */
+  protected function generateElements() {
+    if ($this->count() <= 20) {
+      $this->generateContent();
+    }
+    else {
+      $this->generateBatchContent();
+    }
+  }
+
+  /**
+   * Method responsible for creating content when
+   * the number of elements is less than 50.
+   */
+  private function generateContent() {
+    $num_created = 0;
+
+    foreach ($this->getFiles() as $file) {
+
+      $content_type = $file['type'];
+      $configuration = [
+        'source' => $file['paths'],
+      ];
+
+      $plugin = $this->demoContentManager->createInstance($content_type, $configuration);
+
+      /** @var \Drupal\contacts_demo\DemoContentInterface $plugin */
+      $plugin->createContent();
+
+      if ($file['type'] == 'user') {
+        $num_created += $plugin->count();
+      }
+    }
+
+    // Only care about number of users created.
+    drupal_set_message($this->formatPlural($num_created, '1 users created.', 'Finished creating @count users'));
+  }
+
+  /**
+   * Method responsible for creating content when
+   * the number of elements is greater than 50.
+   */
+  private function generateBatchContent() {
+    // @TODO do batch operations.
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function delete() {
+    foreach ($this->getFiles() as $file) {
+      $content_type = $file['type'];
+      $configuration = [
+        'source' => $file['paths'],
+      ];
+
+      /** @var \Drupal\contacts_demo\DemoContentInterface $plugin */
+      $plugin = $this->demoContentManager->createInstance($content_type, $configuration);
+      $plugin->removeContent();
+    }
+    drupal_set_message('Delete process complete.');
+  }
+
+}
diff --git a/modules/contacts_demo/src/DemoFlavourInterface.php b/modules/contacts_demo/src/DemoFlavourInterface.php
new file mode 100644
index 0000000..0242af8
--- /dev/null
+++ b/modules/contacts_demo/src/DemoFlavourInterface.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Component\Plugin\PluginInspectionInterface;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
+
+interface DemoFlavourInterface extends PluginInspectionInterface, ContainerFactoryPluginInterface {
+
+  /**
+   * Returns the label for the flavour manifest.
+   *
+   * @return string
+   *   The label for the flavour manifest.
+   */
+  public function getLabel();
+
+  /**
+   * Returns the description for the flavour manifest.
+   *
+   * @return string
+   *   The description for the flavour manifest.
+   */
+  public function getDescription();
+
+  /**
+   * Returns the module name.
+   *
+   * @return string
+   *   The module name where is placed file with data.
+   */
+  public function getModule();
+
+  /**
+   * Returns the files containing entity details.
+   *
+   * @return array
+   *   Array containing the file paths keyed by the entity type contained in the
+   *   files.
+   */
+  public function getFiles();
+
+  /**
+   * Returns the number of entities in manifest.
+   *
+   * @return int
+   *   The number of entities in manifest.
+   */
+  public function count();
+
+
+  /**
+   * Generates content based on manifest.
+   */
+  public function generate();
+
+  /**
+   * Deletes content generated by manifest.
+   */
+  public function delete();
+}
diff --git a/modules/contacts_demo/src/DemoFlavourManager.php b/modules/contacts_demo/src/DemoFlavourManager.php
new file mode 100644
index 0000000..4db6ded
--- /dev/null
+++ b/modules/contacts_demo/src/DemoFlavourManager.php
@@ -0,0 +1,92 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\Plugin\Discovery\ContainerDerivativeDiscoveryDecorator;
+use Drupal\Core\Plugin\Discovery\YamlDirectoryDiscovery;
+
+/**
+ * Manages discovery and instantiation of demo flavour plugins.
+ */
+class DemoFlavourManager  extends DefaultPluginManager implements DemoFlavourManagerInterface {
+
+  /**
+   * Provides some default values for the definition of all flavour plugins.
+   *
+   * @var array
+   */
+  protected $defaults = array(
+    'label' => '',
+    'description' => '',
+    'class' => 'Drupal\contacts_demo\DemoFlavour',
+    'id' => '',
+  );
+
+  /**
+   * The object that discovers plugins managed by this manager.
+   *
+   * @var \Drupal\Component\Plugin\Discovery\DiscoveryInterface
+   */
+  protected $discovery;
+
+  /**
+   * The object that instantiates plugins managed by this manager.
+   *
+   * @var \Drupal\Component\Plugin\Factory\FactoryInterface
+   */
+  protected $factory;
+
+  /**
+   * The module handler.
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+
+  /**
+   * Constructs a \Drupal\contacts_demo\DemoFlavourManager object.
+   *
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler.
+   */
+  public function __construct(ModuleHandlerInterface $module_handler) {
+    $this->moduleHandler = $module_handler;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function processDefinition(&$definition, $plugin_id) {
+    parent::processDefinition($definition, $plugin_id);
+    $definition['id'] = $plugin_id;
+  }
+
+  /**
+   * Gets the plugin discovery.
+   *
+   * @return \Drupal\Component\Plugin\Discovery\DiscoveryInterface
+   */
+  protected function getDiscovery() {
+    if (!isset($this->discovery)) {
+      $directories = array_map(function($directory) {
+        return [$directory . '/contacts_flavours', $directory . '/flavours'];
+      }, $this->moduleHandler->getModuleDirectories());
+
+      $yaml_discovery = new YamlDirectoryDiscovery($directories, 'contacts_demo');
+      $this->discovery = new ContainerDerivativeDiscoveryDecorator($yaml_discovery);
+    }
+    return $this->discovery;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isPluginSupported($plugin_id) {
+    $definition = $this->getDefinition($plugin_id, FALSE);
+    return $definition && $definition['supported'];
+  }
+
+}
diff --git a/modules/contacts_demo/src/DemoFlavourManagerInterface.php b/modules/contacts_demo/src/DemoFlavourManagerInterface.php
new file mode 100644
index 0000000..9ae5bac
--- /dev/null
+++ b/modules/contacts_demo/src/DemoFlavourManagerInterface.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\Component\Plugin\PluginManagerInterface;
+
+/**
+ * Demo Flavour plugin manager interface.
+ */
+interface DemoFlavourManagerInterface extends PluginManagerInterface {
+
+  /**
+   * Checks if plugin has a definition and is supported.
+   *
+   * @param string $plugin_id
+   *   The ID of the plugin to check.
+   *
+   * @return bool
+   *   TRUE if the plugin is supported, FALSE otherwise.
+   */
+  public function isPluginSupported($plugin_id);
+
+}
diff --git a/modules/contacts_demo/src/DemoUser.php b/modules/contacts_demo/src/DemoUser.php
new file mode 100644
index 0000000..88c010f
--- /dev/null
+++ b/modules/contacts_demo/src/DemoUser.php
@@ -0,0 +1,178 @@
+<?php
+
+namespace Drupal\contacts_demo;
+
+use Drupal\profile\ProfileStorageInterface;
+use Drupal\file\FileStorageInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Session\AccountInterface;
+use Drupal\profile\Entity\ProfileType;
+
+abstract class DemoUser extends DemoContent {
+
+  /**
+   * The profile storage.
+   *
+   * @var \Drupal\profile\ProfileStorageInterface
+   */
+  protected $profileStorage;
+
+  /**
+   * The file storage.
+   *
+   * @var \Drupal\file\FileStorageInterface
+   */
+  protected $fileStorage;
+
+  /**
+   * DemoUser constructor.
+   * @param array $configuration
+   * @param string $plugin_id
+   * @param mixed $plugin_definition
+   * @param \Drupal\contacts_demo\DemoContentParserInterface $parser
+   * @param \Drupal\profile\ProfileStorageInterface $profile_storage
+   * @param \Drupal\file\FileStorageInterface $file_storage
+   */
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, DemoContentParserInterface $parser, ProfileStorageInterface $profile_storage, FileStorageInterface $file_storage) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
+
+    $this->parser = $parser;
+    $this->profileStorage = $profile_storage;
+    $this->fileStorage = $file_storage;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $configuration,
+      $plugin_id,
+      $plugin_definition,
+      $container->get('contacts_demo.yaml_parser'),
+      $container->get('entity.manager')->getStorage('profile'),
+      $container->get('entity.manager')->getStorage('file')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function createContent() {
+    $data = $this->fetchData();
+
+    foreach ($data as $uuid => $item) {
+      // Must have uuid and same key value.
+      if ($uuid !== $item['uuid']) {
+//        drush_log(dt("User with uuid: {$uuid} has a different uuid in content."), LogLevel::ERROR);
+        continue;
+      }
+
+      // Check whether user with same uuid already exists.
+      $accounts = $this->entityStorage->loadByProperties([
+        'uuid' => $uuid,
+      ]);
+
+      if ($accounts) {
+//        drush_log(dt("User with uuid: {$uuid} already exists."), LogLevel::WARNING);
+        continue;
+      }
+
+      // Load image by uuid and set to a profile.
+      if (!empty($item['picture'])) {
+        $item['picture'] = $this->preparePicture($item['picture']);
+      }
+      else {
+        // Set "null" to exclude errors during saving (in cases when picture will equal to "false").
+        $item['picture'] = NULL;
+      }
+
+      if ($item['decoupled']) {
+        $item['roles'] = array_merge($item['roles'], [AccountInterface::ANONYMOUS_ROLE]);
+      }
+      else {
+        $item['roles'] = array_merge($item['roles'], [AccountInterface::AUTHENTICATED_ROLE]);
+      }
+      $item['roles'] += array_filter($item['roles']);
+
+
+      $entry = $this->getEntry($item);
+      $account = $this->entityStorage->create($entry);
+      $account->enforceIsNew();
+      $account->save();
+
+      if (!$account->id()) {
+        continue;
+      }
+
+      $this->content[ $account->id() ] = $account;
+
+      // Load the profile, since it's autocreated.
+      $profile = $this->profileStorage->create([
+        'uid' => $account->id(),
+        'type' => ProfileType::load('crm_indiv')->id(),
+      ]);
+      $this->fillProfile($profile, $item);
+      $profile->save();
+    }
+
+    return $this->content;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getEntry($item) {
+    $entry = [
+      'uuid' => $item['uuid'],
+      'name' => $item['username'],
+      'mail' => $item['mail'],
+      'init' => $item['mail'],
+      'status' => $item['status'],
+      'user_picture' => $item['picture'],
+      'created' => REQUEST_TIME,
+      'changed' => REQUEST_TIME,
+      'roles' => array_values($item['roles']),
+    ];
+
+    return $entry;
+  }
+
+  /**
+   * Prepares data about an image of a profile.
+   *
+   * @param $picture
+   * @return array
+   */
+  protected function preparePicture($picture) {
+    $value = NULL;
+    $files = $this->fileStorage->loadByProperties([
+      'uuid' => $picture,
+    ]);
+
+    if ($files) {
+      $value = [
+        [
+          'target_id' => current($files)->id(),
+        ],
+      ];
+    }
+
+    return $value;
+  }
+
+  /**
+   * Fills the some fields of a profile.
+   *
+   * @param \Drupal\profile\Entity\ProfileInterface $profile
+   * @param array $item
+   */
+  protected function fillProfile($profile, $item) {
+    $profile->crm_name = $item['full_name'];
+    $profile->crm_gender = $item['gender'];
+    $profile->crm_dob = $item['dob'];
+    $profile->crm_phone = $item['phone'];
+//    $profile->crm_address = $item['address'];
+  }
+
+}
diff --git a/modules/contacts_demo/src/Form/GenerateDeleteForm.php b/modules/contacts_demo/src/Form/GenerateDeleteForm.php
new file mode 100644
index 0000000..2bcc8db
--- /dev/null
+++ b/modules/contacts_demo/src/Form/GenerateDeleteForm.php
@@ -0,0 +1,90 @@
+<?php
+
+namespace Drupal\contacts_demo\Form;
+
+use Drupal\contacts_demo\DemoContentManager;
+use Drupal\contacts_demo\DemoFlavourInterface;
+use Drupal\contacts_demo\DemoFlavourManager;
+use Drupal\Core\Form\FormBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Defines a form that deletes demo content.
+ */
+class GenerateDeleteForm extends FormBase {
+
+  /**
+   * The Demo Flavour Manager.
+   *
+   * @var \Drupal\contacts_demo\DemoFlavourManager
+   */
+  protected $demoFlavourManager;
+
+  /**
+   * The Demo Content Manager.
+   *
+   * @var \Drupal\contacts_demo\DemoContentManager
+   */
+  protected $demoContentManager;
+  
+  /**
+   * Constructs a new SettingsForm object.
+   *
+   * @param \Drupal\contacts_demo\DemoFlavourManager $demo_flavour_manager
+   *   The Demo Flavour Manager.
+   * @param \Drupal\contacts_demo\DemoContentManager $demo_content_manager
+   *   The Demo Content Manager.
+   */
+  public function __construct(DemoFlavourManager $demo_flavour_manager, DemoContentManager $demo_content_manager) {
+    $this->demoFlavourManager = $demo_flavour_manager;
+    $this->demoContentManager = $demo_content_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('plugin.manager.demo_flavour'),
+      $container->get('plugin.manager.demo_content')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'contacts_demo_admin_generate_delete_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, Request $request = NULL) {
+    // @todo Show information about what content will be deleted.
+    $form['actions'] = array('#type' => 'actions');
+    $form['actions']['submit'] = array(
+      '#type' => 'submit',
+      '#value' => $this->t('Delete'),
+      '#button_type' => 'primary',
+    );
+    
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    // @todo Figure out which flavours have been generated.
+    $flavour = 'default';
+
+    /* @var $plugin DemoFlavourInterface */
+    $plugin = $this->demoFlavourManager->createInstance($flavour);
+    // Delete content.
+    $plugin->delete();
+  }
+
+}
diff --git a/modules/contacts_demo/src/Form/GenerateForm.php b/modules/contacts_demo/src/Form/GenerateForm.php
new file mode 100644
index 0000000..7aac9d4
--- /dev/null
+++ b/modules/contacts_demo/src/Form/GenerateForm.php
@@ -0,0 +1,111 @@
+<?php
+
+namespace Drupal\contacts_demo\Form;
+
+use Drupal\contacts_demo\DemoContentManager;
+use Drupal\contacts_demo\DemoFlavourManager;
+use Drupal\Core\Form\FormBase;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\HttpFoundation\Request;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Defines a form that generates demo content.
+ */
+class GenerateForm extends FormBase {
+
+  /**
+   * The Demo Flavour Manager.
+   *
+   * @var \Drupal\contacts_demo\DemoFlavourManager
+   */
+  protected $demoFlavourManager;
+
+  /**
+   * The Demo Content Manager.
+   *
+   * @var \Drupal\contacts_demo\DemoContentManager
+   */
+  protected $demoContentManager;
+  
+  /**
+   * Constructs a new SettingsForm object.
+   *
+   * @param \Drupal\contacts_demo\DemoFlavourManager $demo_flavour_manager
+   *   The Demo Flavour Manager.
+   * @param \Drupal\contacts_demo\DemoContentManager $demo_content_manager
+   *   The Demo Content Manager.
+   */
+  public function __construct(DemoFlavourManager $demo_flavour_manager, DemoContentManager $demo_content_manager) {
+    $this->demoFlavourManager = $demo_flavour_manager;
+    $this->demoContentManager = $demo_content_manager;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('plugin.manager.demo_flavour'),
+      $container->get('plugin.manager.demo_content')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getFormId() {
+    return 'contacts_demo_admin_generate_form';
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildForm(array $form, FormStateInterface $form_state, Request $request = NULL) {
+    // @todo Work out if flavours have already been generated.
+    $form['flavours'] = array(
+      '#type' => 'radios',
+      '#title' => $this->t('Demo Flavours'),
+      '#required' => TRUE,
+      '#default_value' => 'default',
+      '#options' => [],
+      '#description' => $this->t('Select the flavour of contacts demo content you wish to install.'),
+    );
+
+    foreach ($this->demoFlavourManager->getDefinitions() as $id => $definition) {
+      $form['flavours']['#options'][$id] = $definition['label'];
+
+      $supported = $this->demoFlavourManager->isPluginSupported($id);
+      $form['flavours'][$id]['#disabled'] = !$supported;
+
+      $form['flavours'][$id]['#description'] = [
+        '#type' => 'inline_template',
+        '#template' => '{{ description }}{% if not supported %}<div><small>{% trans %}<strong>Not available</strong>. You may need to install external dependencies for use this plugin.{% endtrans %}</small></div>{% endif %}',
+        '#context' => [
+          'description' => $definition['description'],
+          'supported' => $supported,
+        ]
+      ];
+    }
+
+    $form['actions'] = array('#type' => 'actions');
+    $form['actions']['submit'] = array(
+      '#type' => 'submit',
+      '#value' => $this->t('Generate'),
+      '#button_type' => 'primary',
+    );
+    
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitForm(array &$form, FormStateInterface $form_state) {
+    $flavour = $form_state->getValue('flavours');
+    $plugin = $this->demoFlavourManager->createInstance($flavour);
+    // Generate content.
+    $plugin->generate();
+  }
+
+}
diff --git a/modules/contacts_demo/src/Plugin/DemoContent/File.php b/modules/contacts_demo/src/Plugin/DemoContent/File.php
new file mode 100644
index 0000000..cf1a6e3
--- /dev/null
+++ b/modules/contacts_demo/src/Plugin/DemoContent/File.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Drupal\contacts_demo\Plugin\DemoContent;
+
+use Drupal\contacts_demo\DemoFile;
+
+/**
+ * @DemoContent(
+ *   id = "file",
+ *   label = @Translation("File"),
+ *   source = "content/entity/file.yml",
+ *   entity_type = "file"
+ * )
+ */
+class File extends DemoFile {
+
+}
diff --git a/modules/contacts_demo/src/Plugin/DemoContent/User.php b/modules/contacts_demo/src/Plugin/DemoContent/User.php
new file mode 100644
index 0000000..3c1fcd8
--- /dev/null
+++ b/modules/contacts_demo/src/Plugin/DemoContent/User.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Drupal\contacts_demo\Plugin\DemoContent;
+
+use Drupal\contacts_demo\DemoUser;
+
+/**
+ * @DemoContent(
+ *   id = "user",
+ *   label = @Translation("User"),
+ *   source = "content/entity/user.yml",
+ *   entity_type = "user"
+ * )
+ */
+class User extends DemoUser {
+
+}