Method value_data_capacity

cpp/src/arrow/array/builder_binary.h:357–357

\return capacity of values buffer

  int64_t value_data_length() const { return value_data_builder_.length(); }
  /// \return capacity of values buffer
  int64_t value_data_capacity() const { return value_data_builder_.capacity(); }

  /// \return data pointer of the value date builder
  const offset_type* offsets_data() const { return offsets_builder_.data(); }