EnvoyHTTPCallbacks.onData() systematically gets called with an empty chunk

it looks like that the EnvoyHTTPCallbacks.onData() systematically gets called with an empty chunk (ByteBuffer.remaining() == 0 and endStream == true). When the Content-Length is provided in the response header, would it be advisable to rather have the callback to provide the last chunk with data? (ByteBuffer.remaining() != 0 and endStream == true). Note: for the Cronvoy implementation, this does not really matter: the last callback can be ignored when the Content-Length is provided.