public function orOn($localKey, $operator, $referenceKey)
    {
        $this->on($localKey, $operator, $referenceKey, 'or'); return $this;
    }
public function orOn($localKey, $operator, $referenceKey)
    {
        $this->on($localKey, $operator, $referenceKey, 'or'); return $this;
    }
public function orOn ( $ localKey , $ operator , $ referenceKey ) { $ this -> on ( $ localKey , $ operator , $ referenceKey , 'or' ) ; return $ this ; }
Add an or on condition to the join object

@param string                $localKey
@param string                $operator
@param string                $referenceKey

@return self
Add an or on condition to the join object