public function deleteByPK($pk){
        $pkConditions = $this->buildPKConditions($this->pk, $pk);
        return $this->delete($pkConditions[0], $pkConditions[1]);
    }
public function deleteByPK($pk){
        $pkConditions = $this->buildPKConditions($this->pk, $pk);
        return $this->delete($pkConditions[0], $pkConditions[1]);
    }
public function deleteByPK ( $ pk ) { $ pkConditions = $ this -> buildPKConditions ( $ this -> pk , $ pk ) ; return $ this -> delete ( $ pkConditions [ 0 ] , $ pkConditions [ 1 ] ) ; }
Delete by primary key

@param string|array $pk
@return int|boolean
Delete by primary key