public function inserir()
 {
     $servico = $this->popula();
     $servicoDAO = new ServicoDAO();
     try {
         $servicoDAO->beginTrans();
         $servico->id_servico = $servicoDAO->inserir($servico);
         $servicoDAO->commit();
     } catch (Exception $erro) {
         $erros[] = $erro->getMessage();
         $servicoDAO->rollBack();
         $includes = array(new IncludeView('servico.form.php', 'servico', 'inserir'));
         require_once '../base/conteudo.php';
     }
     $this->redir('servico', 'index');
 }