Neos\Flow\Tests\Unit\Package\PackageManagerTest::createPackageThrowsExceptionForExistingPackageKey PHP Method

    public function createPackageThrowsExceptionForExistingPackageKey()
    {
        $this->packageManager->createPackage('Acme.YetAnotherTestPackage');
        $this->packageManager->createPackage('Acme.YetAnotherTestPackage');
    }