code: def bind(self, func, etype):
          '''
          Wraps around container.bind().
          '''
          if func not in self._event_cbs:
              wrapped = self._WrapCB(self, func)
              self._event_cbs[func] = wrapped
          else:
              wrapped = self._event_cbs[func]
          self.container.bind(wrapped, etypef bind(self, func, etype):
          '''
          Wraps around container.bind().
          '''
          if func not in self._event_cbs:
              wrapped = self._WrapCB(self, func)
              self._event_cbs[func] = wrapped
          else:
              wrapped = self._event_cbs[func]
          self.container.bind(wrapped, etype)
docs: Wraps around container.bind().