public function excluir(MalaDireta $obj)
 {
     $strSQL = "DELETE FROM CAD_MDP_MALAS_DIRETAS_PESSOAS WHERE MAD_ID = " . $obj->getId() . " ";
     if (Db::getInstance()->executar($strSQL)) {
         $strSQL1 = "DELETE FROM ADM_TCA_TIPOS_CARTAS ";
         $strSQL1 .= "WHERE TCA_ID = " . $obj->getId() . " ";
         return Db::getInstance()->executar($strSQL);
     } else {
         return false;
     }
 }