/**
  * Declares an association between this object and a Gastos object.
  *
  * @param      Gastos $v
  * @return     GastoTarjeta The current object (for fluent API support)
  * @throws     PropelException
  */
 public function setGastos(Gastos $v = null)
 {
     if ($v === null) {
         $this->setIdGasto(NULL);
     } else {
         $this->setIdGasto($v->getId());
     }
     $this->aGastos = $v;
     // Add binding for other direction of this n:n relationship.
     // If this object has already been added to the Gastos object, it will not be re-added.
     if ($v !== null) {
         $v->addGastoTarjeta($this);
     }
     return $this;
 }