docs: def map(self, func):
          """
          :param func:
          :type func: (K, T) -> U
          :rtype: TList[U]
  
          Usage:
  
              >>> sorted(TDict(k1=1, k2=2, k3=3).map(lambda k, v: v*2))
              [2, 4, 6]
          """
          return TList([func(k, v) for k, v in self.items()])