concept: what transport::Blob_receiver is to transport::Native_handle_receiver (...">sync_io::Blob_receiver</a>, <a class="el" href="classipc_1_1transport_1_1sync__io_1_1Native__handle__sender.html" title="A documentation-only concept defining the behavior of an object that is the sync_io-pattern counterpa...">sync_io::Native_handle_sender</a>, <a class="el" href="classipc_1_1transport_1_1sync__io_1_1Native__handle__receiver.html" title="A documentation-only concept defining the behavior of an object that i