code: function getFieldsForModelTemplate(fields) {
      var lg = fields.length - 1;
  
      var modelFields = '{' + os.EOL;
      fields.forEach(function(field, index, array) {
          modelFields += '\t\'' + field.name + '\' : '+ (field.isArray ? '[' : '') + (allowedFieldsTypes[field.type]).name + (field.isArray ? ']' : '');
          modelFields += (lg > index) ? ',' + os.EOL : os.EOL;
  
          if (field.reference) {
              modelFields = modelFields.replace(/{ref}/, field.reference);
          }
      });
      modelFields += '}';
  
      return modelFields;
  }
docs: Format the fields for the model template
  @param {array} fields fields input
  @returns {string} formatted fields