Method mutable_key

src/system/proto/node.pb.h:466–470

  return key_ != NULL ? *key_ : *default_instance_->key_;
}
inline ::PS::PbRange* Node::mutable_key() {
  set_has_key();
  if (key_ == NULL) key_ = new ::PS::PbRange;
  return key_;
}
inline ::PS::PbRange* Node::release_key() {
  clear_has_key();
  ::PS::PbRange* temp = key_;