parameters: (self, Username)
docstring: This event is caused by a change in message history.
  
          @param Username: Name of the user whose message history changed.
          @type Username: unicode
docstring_summary: This event is caused by a change in message history.
docstring_tokens: This event is caused by a change in message history .
function: def MessageHistory(self, Username):
          '''This event is caused by a change in message history.
  
          @param Username: Name of the user whose message history changed.
          @type Username: unicode
          '''
function_tokens: def MessageHistory ( self , Username ) :