public function preSave(PropelPDO $con = null)
 {
     if ($this->setBody) {
         $this->bodyPreviousVersion = $this->getBodyFileVersion();
         if ($this->bodyPreviousVersion) {
             $this->incrementBodyFileVersion();
         } else {
             $this->resetBodyFileVersion();
         }
     }
     return parent::preSave($con);
 }