src/Baum/Node.php
public function isSelfOrAncestorOf($other) {
   return (
      $this->getLeft() <= $other->getLeft() &&
      $this->getRight() > $other->getLeft() &&
      $this->inSameScope($other)
    );
  }
public function isSelfOrAncestorOf($other) {
   return (
      $this->getLeft() <= $other->getLeft() &&
      $this->getRight() > $other->getLeft() &&
      $this->inSameScope($other)
    );
  }
Returns true if node is self or an ancestor.

@param NestedSet
@return boolean