PagingDetails.fromJson constructor
Implementation
factory PagingDetails.fromJson(Map<String, dynamic> json) {
  return PagingDetails(
    totalItems: json['totalItems'] as int,
    currentPage: json['currentPage'] as int? ?? 0,
    pageSize: json['pageSize'] as int? ?? 0,
    sortField: json['sortField'] as String? ?? '',
    sortOrder: json['sortOrder'] as String? ?? '',
  );
}