@synchronized(lock)<EOL><INDENT>def has_frames(self, destination):<DEDENT>
return (destination in self.queue_metadata) and bool(self.queue_metadata[destination]['<STR_LIT>'])<EOL>
Whether specified queue has any frames.

@param destination: The queue name (destinationination).
@type destination: C{str}

@return: Whether there are any frames in the specified queue.
@rtype: C{bool}