code: def load(self, *args, **kwargs):
          
          self.clear()
          self.updateall(*args, **kwargs)
          return self
docs: Clear all existing key:value items and import all key:value items from
          <mapping>. If multiple values exist for the same key in <mapping>, they
          are all be imported.
  
          Example:
            omd = omdict([(1,1), (1,11), (1,111), (2,2), (3,3)])
            omd.load([(4,4), (4,44), (5,5)])
            omd.allitems() == [(4,4), (4,44), (5,5)]
  
          Returns: <self>.