public function setDivision(Division $v = null)
 {
     if ($v === null) {
         $this->setFkDivisionId(0);
     } else {
         $this->setFkDivisionId($v->getId());
     }
     $this->aDivision = $v;
     if ($v !== null) {
         $v->addRelDivisionActividadDocente($this);
     }
     return $this;
 }