text: var _ = {};
  var escapeMap = {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      '"': '&quot;',
      "'": '&#x27;'
  };
  var escapeRegexp = new RegExp('[' + Object.keys(escapeMap).join('') + ']', 'g');
  _.escape = function(string) {
      if (!string) return '';
      return String(string).replace(escapeRegexp, function(match) {
          return escapeMap[match];
      });
  };
  module.exports = function(obj) {
  obj || (obj = {});
  var __t, __p = '', __e = _.escape;
  with (obj) {
  __p += '------=mhtDocumentPart\nContent-Type: ' +
  ((__t = ( contentType )) == null ? '' : __t) +
  '\nContent-Transfer-Encoding: ' +
  ((__t = ( contentEncoding )) == null ? '' : __t) +
  '\nContent-Location: ' +
  ((__t = ( contentLocation )) == null ? '' : __t) +
  '\n\n' +
  ((__t = ( encodedContent )) == null ? '' : __t) +
  '\n';
  
  }
  return __p
  }