PhpParser\ParserAbstract::checkClassMethod PHP Method

    protected function checkClassMethod(ClassMethod $node, $modifierPos) {
        if ($node->flags & Class_::MODIFIER_STATIC) {
            switch (strtolower($node->name)) {
                case '__construct':
                    $this->emitError(new Error(
                        sprintf('Constructor %s() cannot be static', $node->name),
                        $this->getAttributesAt($modifierPos)));
                    break;
                case '__destruct':
                    $this->emitError(new Error(
                        sprintf('Destructor %s() cannot be static', $node->name),
                        $this->getAttributesAt($modifierPos)));
                    break;
                case '__clone':
                    $this->emitError(new Error(
                        sprintf('Clone method %s() cannot be static', $node->name),
                        $this->getAttributesAt($modifierPos)));
                    break;
            }
        }
    }