composer/tests/Composer/Test/Util/Fixtures/composer_scripts-descriptions.json

{
    "scripts": {
        "test": "phpunit",
        "phpcs": "phpcs --standard=PSR2 src"
    },
    "scripts-descriptions": {
        "test": "Launches the preconfigured PHPUnit",
        "phpcsxxx": "Checks that the application code conforms to coding standard"
    }
}