/**
  * Handle the creation of the Field in the Database
  * @param $command
  * @return static
  */
 public function handle($command)
 {
     $command->namespace = EntityModel::find($command->entity_id)->namespace;
     $field = FieldModel::create((array) $command);
     event(new FieldWasCreated($field));
     return $field;
 }