public function get_properties() {
		$boxes = $this->get_boxes();
		$list  = [];

		foreach ( $boxes as $box ) {
			foreach ( $box->properties as $property ) {
				$list[] = $property;
			}
		}

		return $list;
	}
public function get_properties() {
		$boxes = $this->get_boxes();
		$list  = [];

		foreach ( $boxes as $box ) {
			foreach ( $box->properties as $property ) {
				$list[] = $property;
			}
		}

		return $list;
	}
public function get_properties ( ) { $ boxes = $ this -> get_boxes ( ) ; $ list = [ ] ; foreach ( $ boxes as $ box ) { foreach ( $ box -> properties as $ property ) { $ list [ ] = $ property ; } } return $ list ; }
Get root properties.

@return array
Get root properties .