Gets default text representation of the system message. It is a macro which needs to be resolved before sending to the client.
            
            Exception is thrown if messageType is not a system message.
            
            Example of a returned value: {$chat.system.userhaschangednickname|(replace){0}(with)guest_42|(replace){1}(with)lalalal$}
            
Namespace: CMS.ChatAssembly: CMS.Chat (in CMS.Chat.dll) Version: 8.0.0.0 (8.0.5239.26125)
Parameters
- messageType
 - Type: CMS.Chat ChatMessageTypeEnum
Type of the system message. 
- args
 - Type:  
System String 
Optional params which will be included in the macro in form of |replace{{i}}(with)param. i is counter and starts from 0 
Return Value
Type:Macro containing text of the system message
See Also