def METHOD_NAME():
    os.environ["TYR_INSTANCE_fr-se-lyon"] = (
        '{"instance":{"name":"fr-se-lyon","source-directory":"/ed/source",'
        '"backup-directory":"/ed/backup","aliases_file":"/ed/aliases",'
        '"synonyms_file":"/ed/synonyms","target-file":"ed/target_file",'
        '"tmp_file":"/ed/tmp_file","is-free":true,"exchange":"exchange"},'
        '"database":{"host":"host1","dbname":"jormun","username":"user1",'
        '"password":"pass1","port":492}}'
    )
    yield
    del os.environ["TYR_INSTANCE_fr-se-lyon"]