code: function _anyFailingRequired(attributes) {
      for (var i in attributes) {
        var key = attributes[i];
        if ( ! _resolvers.validateRequired(key, self.date[key])) {
          return true;
        }
      }
  
      return false;
    }
docs: determine if any of the given attributes fail the required test.
  
  @param  array  $attributes
  @return bool