class Constant {
  static const acceptHeaderDefault = 'application/json';
  static const contentTypeHeaderDefault = 'application/json';
  static const pdfMimeType = 'application/pdf';
  static const base64Charset = 'base64';
  static const textHtmlMimeType = 'text/html';
  static const octetStreamMimeType = 'application/octet-stream';
  static const pdfExtension = '.pdf';
  static const imageType = 'image';
}