src/Composer/Repository/ArrayRepository.php
public function hasPackage(PackageInterface $package)
    {
        $packageId = $package->getUniqueName();

        foreach ($this->getPackages() as $repoPackage) {
            if ($packageId === $repoPackage->getUniqueName()) {
                return true;
            }
        }

        return false;
    }
public function hasPackage(PackageInterface $package)
    {
        $packageId = $package->getUniqueName();

        foreach ($this->getPackages() as $repoPackage) {
            if ($packageId === $repoPackage->getUniqueName()) {
                return true;
            }
        }

        return false;
    }
{@inheritDoc}