Method remove

external/yaml-cpp/include/yaml-cpp/node/impl.h:395–400

template <typename Key>
inline bool Node::remove(const Key& key) {
  if (!m_isValid)
    throw InvalidNode();
  EnsureNodeExists();
  return m_pNode->remove(detail::to_value(key), m_pMemory);
}

inline const Node Node::operator[](const Node& key) const {
  if (!m_isValid || !key.m_isValid)