code: protected function getFieldManager()
      {
          /* Verifica se existe Field Manager com prefixo igual a controller */
          if (! $this->fieldManager) {
          	$this->fieldManager = $this->repository->getFieldManager();
          }
          
          /* Ainda precisa instanciar o objeto */
          if (is_string($this->fieldManager)) {
              return new $this->fieldManager();
          }
          
          /* Objeto já instanciado, só retornar */
          return $this->fieldManager;
      }
docs: Return instance Field Manager of controller
  
  @return object Lab123\Odin\FieldManager