public function getChildAt($index)
	{
		if ($index < 0) {
			throw new OutOfRangeException();
		}
		if ($index >= count($this->node_children)) {
			throw new OutOfRangeException();
		}
		return $this->node_children[$index];
	}
public function getChildAt($index)
	{
		if ($index < 0) {
			throw new OutOfRangeException();
		}
		if ($index >= count($this->node_children)) {
			throw new OutOfRangeException();
		}
		return $this->node_children[$index];
	}
public function getChildAt ( $ index ) { if ( $ index < 0 ) { throw new OutOfRangeException ( ) ; } if ( $ index >= count ( $ this -> node_children ) ) { throw new OutOfRangeException ( ) ; } return $ this -> node_children [ $ index ] ; }
Get the child at the specified index.
@param int $index
@throws \OutOfRangeException
@return self
Get the child at the specified index .