protected function getValuesFromKeyMap( $key )
    {
        if ( empty( $key ) || empty( $this->keyMap[$key] ) )
        {
            return null;
        }

        return $this->keyMap[$key];
    }
protected function getValuesFromKeyMap( $key )
    {
        if ( empty( $key ) || empty( $this->keyMap[$key] ) )
        {
            return null;
        }

        return $this->keyMap[$key];
    }
protected function getValuesFromKeyMap ( $ key ) { if ( empty ( $ key ) || empty ( $ this -> keyMap [ $ key ] ) ) { return null ; } return $ this -> keyMap [ $ key ] ; }
Fetches values needed for testing stored on mapping

@param string $key (Unique) Identifier key on the array

@return mixed|null Mapped value or null if not found
Fetches values needed for testing stored on mapping