Categories constructor

Implementation

const factory Categories({
  @JsonKey(name: 'first_category_id') String? firstCategoryId,
  @JsonKey(name: 'first_category_name') String? firstCategoryName,
  @JsonKey(name: 'main_category_id') String? mainCategoryId,
  @JsonKey(name: 'main_category_name') String? mainCategoryName,
  @JsonKey(name: 'second_category_id') String? secondCategoryId,
  @JsonKey(name: 'second_category_name') String? secondCategoryName,
}) = _Categories;