{{tag>Index Programmers_Reference Methods  IChannelType_Interface multiuser}}
==== multiUser ()====
<code java>public boolean multiUser () </code>

This method must returntrue if communication with several intelligent business objects is possible through the channel. In this case a message sent through the channel must identify the recipient of the message. For example, the E-mail channel allows communicating with several recipients (a message contains an e-mail address of the recipient) whereas a dedicated channel handling the protocol specific to some software system is probably not multi-user.

If this method returns true intelligent business objects communicating through this channel must have a certain attribute defined (such as an e-mail address). When the message is sent to the recipient through the channel //**AwareIM**// automatically gets the current value of this attribute from the instance of the business object and writes it into the message. See also the [[pr_methods:getchannelvalues|getChannelValues]] method in the [[docs:3500:0400:0410:0414|MessageInterpreter]] class and the [[progref:0400_adding_custom_channels:0420_implementing_channel_type_component:getreceiverentityattribute]] method below.