code: def textify(self, nums:Collection[int], sep=' ') -> List[str]:
          "Convert a list of `nums` to their tokens."
          return sep.join([self.itos[i] for i in nums]) if sep is not None else [self.itos[i] for i in numsf textify(self, nums:Collection[int], sep=' ') -> List[str]:
          "Convert a list of `nums` to their tokens."
          return sep.join([self.itos[i] for i in nums]) if sep is not None else [self.itos[i] for i in nums]
docs: Convert a list of `nums` to their tokens.