messageFilter

A filter for messages to be sent to message processors.

This function is called for each event before it's sent to the message processors. If the function returns true, the event is processed; if it returns false, the event is ignored.

By default, all messages are processed (the filter returns true for all messages).

A filter for messages to be sent to message processors.

This function is called for each event before it's sent to the message processors. If the function returns true, the event is processed; if it returns false, the event is ignored.

By default, all messages are processed (the filter returns true for all messages).

A filter for messages to be sent to message processors.

This function is called for each event before it's sent to the message processors. If the function returns true, the event is processed; if it returns false, the event is ignored.

By default, all messages are processed (the filter returns true for all messages).