public function andIsPreviousSiblingOf(AbstractNestedNode $node, $alias = null)
    {
        return $this->andRootIs($node->getRoot(), $alias)
                        ->andRightnodeEquals($node->getLeftnode() - 1, $alias);
    }
public function andIsPreviousSiblingOf(AbstractNestedNode $node, $alias = null)
    {
        return $this->andRootIs($node->getRoot(), $alias)
                        ->andRightnodeEquals($node->getLeftnode() - 1, $alias);
    }
public function andIsPreviousSiblingOf ( AbstractNestedNode $ node , $ alias = null ) { return $ this -> andRootIs ( $ node -> getRoot ( ) , $ alias ) -> andRightnodeEquals ( $ node -> getLeftnode ( ) - 1 , $ alias ) ; }
Add query part to select previous sibling of node.

@param  \BackBee\NestedNode\AbstractNestedNode                       $node
@param  string                                                $alias optional, the alias to use
@return \BackBee\NestedNode\Repository\NestedNodeQueryBuilder
Add query part to select previous sibling of node .