docs: def connections(self, hotspot=None):
          """
          Returns a list of all the connection instances that are in this scene.
                      
          :return     <list>  [ <XNodeConnection>, .. ]
          """
          cons = self.findItems(XNodeConnection)
          if hotspot is not None:
              filt = lambda x: hotspot in (x.inputHotspot(), x.outputHotspot())
              return filter(filt, cons)
          return cons