Deferring the async load until subscription yields for the first time

[Kaeldehta]

I am currently implementing some custom SharedReaderKey that does not have a concept of "load", but just the capability for subscribing to the data.

For this reason I used continuation.resumeReturningInitialValue for my load endpoint.
This of course means, that when I call load on my shared instance with that key, it always throws the internal load error.

My question would be:

Is there the possibility to still allow the load in that case, but fallback to the subscriber to wait for its first result?