// iterating over the resulting tensor. This may still be viable if resolving
  // the handle loses information, but `SummarizeValue` would be more precise.
  virtual bool PreferCustomSummarizer() const { return false; }

  // Returns a string which summarizes the value of this TensorHandle, for
  // debugging. Does not include a shape or dtype.
  //
  // Included in the default implementation of DebugString.

    return s.status;
  }
  Status Dim(int dim_index, int64_t* dim) const override {
    TF_Status s;
    *dim = methods_.dim(data_, dim_index, &s);
    return s.status;
  }

  bool PreferCustomSummarizer() const override {
    return methods_.summarize != nullptr;
  }

  Status SummarizeValue(std::string& summary) const override {
    if (methods_.summarize == nullptr) {