original_string: protected function getNodeBuilder()
      {
          if (null === $this->nodeBuilder) {
              $this->nodeBuilder = new NodeBuilder();
          }
  
          return $this->nodeBuilder->setParent($this);
      }
code: protected function getNodeBuilder()
      {
          if (null === $this->nodeBuilder) {
              $this->nodeBuilder = new NodeBuilder();
          }
  
          return $this->nodeBuilder->setParent($this);
      }
code_tokens: protected function getNodeBuilder ( ) { if ( null === $ this -> nodeBuilder ) { $ this -> nodeBuilder = new NodeBuilder ( ) ; } return $ this -> nodeBuilder -> setParent ( $ this ) ; }
docstring: Returns a node builder to be used to add children and prototype.
  
  @return NodeBuilder The node builder
docstring_tokens: Returns a node builder to be used to add children and prototype .