hasCovers example

        return InClassNode::class;
    }

    /** * @param InClassNode $node * * @return array<array-key, RuleError|string> */
    public function processNode(Node $node, Scope $scope): array
    {
        if ($this->hasCovers($node)) {
            return [];
        }

        if ($this->isTestClass($node)) {
            return ['Test classes must have @covers annotation'];
        }

        return [];
    }

    private function isTestClass(InClassNode $node): bool
    {