(self)
return bool(self.__listeners)
Return true if there are any listeners subscribed to
        this topic, false otherwise.
Return true if there are any listeners subscribed to
        this topic, false otherwise.
Return true if there are any listeners subscribed to this topic false otherwise .
def hasListeners(self) -> bool:
        """
        Return true if there are any listeners subscribed to
        this topic, false otherwise.
        """
        return bool(self.__listeners)
def hasListeners ( self ) -> bool : return bool ( self . __listeners )