const PartialTensorShape shape);
  virtual Status SetAttrFunction(const char* attr_name,
                                 const AbstractOperation* value) = 0;
  virtual Status SetAttrFunctionName(const char* attr_name, const char* value,
                                     size_t length) = 0;
  virtual Status SetAttrTensor(const char* attr_name,
                               AbstractTensorInterface* tensor) = 0;