/**
  * Check relation if it is a many to one relation.
  *
  * @return boolean
  */
 public function isManyToOne()
 {
     $o2o = $this->foreign->parseComment('o2o');
     if (!is_null($o2o)) {
         $isMany = !(bool) $this->getBooleanOption($o2o);
     } else {
         $isMany = (bool) $this->parameters->get('many');
     }
     return $isMany;
 }
 /**
  * Check relation if it is unidirectional
  *
  * @return bool
  */
 public function isUnidirectional()
 {
     $o = $this->foreign->parseComment('unidirectional');
     $is = (bool) $this->getBooleanOption($o);
     return $is;
 }