For incoming messages, the name of the method that gateway services call in the listener CFC, as set by the
setCFCMethod method. If setCFCMethod has not been called, returns null, and not onIncomingMessge, which ColdFusion gateway services uses by default. Outgoing messages that are returned by a CFC in response to an incoming message also have the CFC method name in this field if the gateway set the field on the incoming message.