Function UnsafeAdvance

cpp/src/arrow/array/builder_binary.h:877–880

Advance builder without allocating nor writing any values The internal pointer is advanced by `length` values and the same number of non-null entries are appended to the validity bitmap. This method assumes that the `length` values were populated directly, for example using `GetMutableValue`.

  /// This method assumes that the `length` values were populated directly,
  /// for example using `GetMutableValue`.
  void UnsafeAdvance(int64_t length) {
    byte_builder_.UnsafeAdvance(length * byte_width_);
    UnsafeAppendToBitmap(length, true);
  }

  /// Advance builder without allocating nor writing any values
  ///