protected function checkClassConst(ClassConst $node, int $modifierPos) : void { foreach ([ Modifiers::STATIC, Modifiers::ABSTRACT, Modifiers::READONLY, ] as $modifier) { if ($node->flags & $modifier) { $this->emitError(new Error("Cannot use '" . Modifiers::toString($modifier) . "' as constant modifier", $this->getAttributesAt($modifierPos))); } } }