constant_value_ = std::move(constant_value);
    op_ = "Const";
  }

  void set_inputs(InputSeqMatcher inputs) {
    DCHECK(IsEmpty());
    input_matchers_ = std::move(inputs);
  }

  void set_control_deps(NodeSeqMatcher control_deps) {
    DCHECK(IsEmpty());
    control_deps_ = std::move(control_deps);
  }

  void set_attr(AttrKeyValuePair attr) {
    DCHECK(IsEmpty());
    attr_ = std::move(attr);
  }