Method set_ref

lib/yamlcpp/include/yaml-cpp/node/detail/node.h:63–67

  }

  void set_ref(const node& rhs) {
    if (rhs.is_defined())
      mark_defined();
    m_pRef = rhs.m_pRef;
  }
  void set_data(const node& rhs) {
    if (rhs.is_defined())
      mark_defined();