code: def getall(self, key):
          
          key = self._conform_key(key)
          return [self._pairs[i][1] for i in self._key_ids[key]]
docs: A list of all the values stored under this key.
          
          Returns an empty list if there are no values under this key.
          
          >>> m = MultiMap([('a', 1), ('b', 2), ('b', 3), ('c', 4), ('d', 5), ('c', 6)])
          >>> m.getall('a')
          [1]
          >>> m.getall('b')
          [2, 3]
          >>> m.getall('x')
          []