private function classMethodCall($class_name, $colon_node, $method_name) {
    $node = new ClassMethodCallNode();
    $node->addChild($class_name, 'className');
    $node->mergeNode($colon_node);
    $node->addChild($method_name, 'methodName');
    $this->functionCallParameterList($node);
    return $this->objectDereference($this->arrayDeference($node));
  }