def _push(self, mtd, args, name=None):
self._queue.append((mtd, args, name))<EOL>self._pump()<EOL>
Adds a command to the queue.

@param mtd: Method to invoke to process the command
@type mtd: method
@param args: Arguments to apply when invoking the method
@type args: tuple
@param name: Name associated with the command
@type name: str