code: function Content(mimeType, content) {
      var obj = {};
  
      obj.type = mimeType + '; charset=utf-8';
      obj.value = content;
      obj.length = content.length;
  
      return obj;
  }
docs: Generic concept of a Content-Type model => all content is assumed to have charset = 'utf-8'
  
  @param {String} mimeType => how the client should read the content
  @param {Object} content => actual content (file, image, etc)
  @returns {Content} content wrapper for given payload.