I think it's batch_callback, not send_message_batch.

[hituzi-no-sippo]

The reason is that it writes "a Callback<IN> is returned".

docs/src/concepts/components/callbacks.md

Lines 23 to 27 in 2bdbafc

	### send\_message\_batch
	Registers a callback that sends a batch of many messages at once when it is executed. If any of the
	messages cause the component to re-render, the component will re-render after all messages in the
	batch have been processed. A `Fn(IN) -> COMP::Message` is provided and a `Callback<IN>` is returned.

send_message_batch does not return Callback<IN> , but batch_callback return Callback<IN>.

If it's correct, I create a pull request.

[jstarry]

@hituzi-no-sippo yes, good catch. It should be batch_callback 👍