isPlatformPackage example

public function validateRequirements(RequirementsCheckCollection $checks): RequirementsCheckCollection
    {
        $platform = $this->composer->getRepositoryManager()->getLocalRepository()->findPackage('shopware/platform', '*');
        if (!$platform) {
            $platform = $this->composer->getRepositoryManager()->getLocalRepository()->findPackage('shopware/core', '*');
        }
        if (!$platform) {
            $platform = $this->composer->getPackage();
        }

        foreach ($platform->getRequires() as $require => $link) {
            if (!PlatformRepository::isPlatformPackage($require)) {
                continue;
            }

            $result = $this->systemEnvironment->findPackage($require, $link->getConstraint());

            if ($result) {
                $checks->add(new SystemCheck(
                    $require,
                    RequirementCheck::STATUS_SUCCESS,
                    $link->getConstraint()->getPrettyString(),
                    $result->getPrettyVersion()
                ));