#NEWLINE# def registerAll( self , listener ) : #NEWLINE# #INDENT# ' Associate listener with all messages created by this Dispatcher.\n\n        @param listener callable to receive messages\n        @return True if associated with one or more handler; otherwise False\n        ' #NEWLINE# return self . register ( listener , * [ maybeName ( i ) for v in self . messageTypes . values ( ) for i in v ] )