Returns the list of users that the IM server has been told not to send state information about the gateway, if the permit mode is set to DENY_SOME.
array = getDenyList()
An array of IDs (buddy names) of the users on the gateway's deny list, the list of IDs to which the IM server does not send presence status information.
If the XMPP server does not support permission management, this function always returns False.
See GatewayHelper example in Using the GatewayHelper object in the Developing ColdFusion Applications, which uses all GatewayHelper class methods.