Function FieldPath

cpp/src/arrow/type.h:1987–1988

  FieldPath() = default;

  FieldPath(std::vector<int> indices)  // NOLINT runtime/explicit
      : indices_(std::move(indices)) {}

  FieldPath(std::initializer_list<int> indices)  // NOLINT runtime/explicit
      : indices_(std::move(indices)) {}