protected function _isChild( MW_Tree_Node_Interface $node, MW_Tree_Node_Interface $parent )
	{
		return $node->__get('left') > $parent->__get('left') && $node->__get('right') < $parent->__get('right');
	}
protected function _isChild( MW_Tree_Node_Interface $node, MW_Tree_Node_Interface $parent )
	{
		return $node->__get('left') > $parent->__get('left') && $node->__get('right') < $parent->__get('right');
	}
protected function _isChild ( MW_Tree_Node_Interface $ node , MW_Tree_Node_Interface $ parent ) { return $ node -> __get ( 'left' ) > $ parent -> __get ( 'left' ) && $ node -> __get ( 'right' ) < $ parent -> __get ( 'right' ) ; }
Tests if the first node is a child of the second node.

@param MW_Tree_Node_Interface $node Node to test
@param MW_Tree_Node_Interface $parent Parent node
@return boolean True if not is a child of the second node, false if not
Tests if the first node is a child of the second node .