/**
* Check wether there should be changes in the downward tree structure.
*
* @return boolean
*/
protected function hasChange()
{
return !($this->bound1() == $this->node->getRight() || $this->bound1() == $this->node->getLeft());
}
/**
* Check wether there should be changes in the downward tree structure.
*
* @return boolean
*/
protected function hasChange()
{
return !($this->bound1() == $this->node->getRight() || $this->bound1() == $this->node->getLeft());
}