Add javadocs.

Signed-off-by: 秋雨落 <i@rain.cx>

Author: qyl27

src/main/java/games/moegirl/sinocraft/sinocore/api/registry/RegistryBuilder.java

@@ -1,12 +1,12 @@
 package games.moegirl.sinocraft.sinocore.api.registry;
 
-import games.moegirl.sinocraft.sinocore.platform.RegistryPlatform;
 import lombok.Getter;
 import net.minecraft.core.Registry;
 import net.minecraft.resources.ResourceKey;
 
 /**
  * A builder for creating custom registries.
+ *
  * @param <T> Registry entry type.
  * @see RegistryManager#createRegistry(RegistryBuilder)
  */
@@ -20,10 +20,21 @@ public RegistryBuilder(ResourceKey<Registry<T>> key) {
         this.key = key;
     }
 
+    /**
+     * Set the registry to be synchronized to client.
+     *
+     * @return this
+     */
     public RegistryBuilder<T> sync() {
         return sync(true);
     }
 
+    /**
+     * Set whether the registry should be synchronized to client.
+     *
+     * @param value Whether to sync.
+     * @return this
+     */
     public RegistryBuilder<T> sync(boolean value) {
         this.sync = value;
         return this;

src/main/java/games/moegirl/sinocraft/sinocore/api/registry/RegistryManager.java

@@ -43,6 +43,15 @@ private static <T, U extends IRegistrable<T>> U appendRegistrable(Map<String, Li
         return registrable;
     }
 
+    /**
+     * Get all registries created by SinoCore for a mod and registry key.
+     *
+     * @param modId Mod Id.
+     * @param key   Registry key.
+     * @param <T>   Registry entry type.
+     * @param <U>   Registry type.
+     * @return List of registries.
+     */
     @SuppressWarnings("unchecked")
     public static <T, U extends IRegistryBase<T>> List<U> getRegistries(String modId, ResourceKey<Registry<T>> key) {
         if (!REGISTRIES.containsKey(modId)) {
@@ -59,27 +68,62 @@ public static <T, U extends IRegistryBase<T>> List<U> getRegistries(String modId
                 .build();
     }
 
+    /**
+     * Check if a registry exists.
+     *
+     * @param key Registry key.
+     * @param <T> Registry entry type.
+     * @return true if exists.
+     */
     public static <T> boolean hasRegistry(ResourceKey<Registry<T>> key) {
         if (!key.isFor(BuiltInRegistries.REGISTRY.key())) {
             return false;
         }
         return BuiltInRegistries.REGISTRY.containsKey(key.location());
     }
 
+    /**
+     * Get a registry by its key.
+     *
+     * @param key Registry key.
+     * @param <T> Registry entry type.
+     * @return The registry, or null if not found.
+     */
     @Nullable
     @SuppressWarnings("unchecked")
     public static <T> Registry<T> getRegistry(ResourceKey<Registry<T>> key) {
         return (Registry<T>) BuiltInRegistries.REGISTRY.get(key.location());
     }
 
+    /**
+     * Create a new registry (sync by default).
+     *
+     * @param key Registry key.
+     * @param <T> Registry entry type.
+     * @return The created registry.
+     */
     public static <T> Registry<T> createRegistry(ResourceKey<Registry<T>> key) {
         return createRegistry(new RegistryBuilder<>(key).sync());
     }
 
+    /**
+     * Create a new registry.
+     *
+     * @param builder Registry builder.
+     * @param <T>     Registry entry type.
+     * @return The created registry.
+     */
     public static <T> Registry<T> createRegistry(RegistryBuilder<T> builder) {
         return RegistryPlatform.createRegistry(builder);
     }
 
+    /**
+     * Get if the registry exists, otherwise create a new one (sync by default).
+     *
+     * @param key Registry key.
+     * @param <T> Registry entry type.
+     * @return The registry.
+     */
     public static <T> Registry<T> getOrCreateRegistry(ResourceKey<Registry<T>> key) {
         Registry<T> registry = getRegistry(key);
         if (registry != null) {