original_string: public function force_open() {
          $this->forceopen = true;
          if ($this->parent !== null) {
              $this->parent->force_open();
          }
      }
code: public function force_open() {
          $this->forceopen = true;
          if ($this->parent !== null) {
              $this->parent->force_open();
          }
      }
code_tokens: public function force_open ( ) { $ this -> forceopen = true ; if ( $ this -> parent !== null ) { $ this -> parent -> force_open ( ) ; } }
docstring: Forces this node to be open and at the same time forces open all
  parents until the root node.
  
  Recursive.
docstring_tokens: Forces this node to be open and at the same time forces open all parents until the root node .