public function setId( $id )
	{
		if ( $id === null ) {
			$this->_modified = true;
		}

		$this->_values['id'] = $id;
	}
public function setId( $id )
	{
		if ( $id === null ) {
			$this->_modified = true;
		}

		$this->_values['id'] = $id;
	}
public function setId ( $ id ) { if ( $ id === null ) { $ this -> _modified = true ; } $ this -> _values [ 'id' ] = $ id ; }
Sets the unique ID of the node.

@param mixed|null Unique ID of the node
Sets the unique ID of the node .