public synchronized boolean received(int mask) {
		return (m_lastMessagesReceived & mask) != 0;
	}
Query the messages set up by the last {@link #checkForMessage} or {@link #waitForMessage}
call.

@param mask The messages to check for.
@return <code>true</code> if one or more of the received messages matches <code>mask</code>.
ngrinder-core/src/main/java/net/grinder/engine/communication/AgentControllerServerListener.java