6 files declare their use of Loop

ArchiveCommand.php in vendor/composer/composer/src/Composer/Command/ArchiveCommand.php
ArchiveManager.php in vendor/composer/composer/src/Composer/Package/Archiver/ArchiveManager.php
ComposerRepository.php in vendor/composer/composer/src/Composer/Repository/ComposerRepository.php
Factory.php in vendor/composer/composer/src/Composer/Factory.php
InstallationManager.php in vendor/composer/composer/src/Composer/Installer/InstallationManager.php
PartialComposer.php in vendor/composer/composer/src/Composer/PartialComposer.php