How to use the cfgv.NotIn function in cfgv

def _cond(key):
        return cfgv.Conditional(
            key, cfgv.check_string,
            condition_key='repo',
            condition_value=cfgv.NotIn(LOCAL, META),
            ensure_absent=True,
        )

# No defaults are provided here as the config is merged on top of the
    # manifest.
    *[
        cfgv.OptionalNoDefault(item.key, item.check_fn)
        for item in MANIFEST_HOOK_DICT.items
        if item.key != 'id'
    ]
)
CONFIG_REPO_DICT = cfgv.Map(
    'Repository', 'repo',

    cfgv.Required('repo', cfgv.check_string),

    cfgv.ConditionalRecurse(
        'hooks', cfgv.Array(CONFIG_HOOK_DICT),
        'repo', cfgv.NotIn(LOCAL, META),
    ),
    cfgv.ConditionalRecurse(
        'hooks', cfgv.Array(MANIFEST_HOOK_DICT),
        'repo', LOCAL,
    ),
    cfgv.ConditionalRecurse(
        'hooks', cfgv.Array(META_HOOK_DICT),
        'repo', META,
    ),

    MigrateShaToRev(),
    cfgv.WarnAdditionalKeys(('repo', 'rev', 'hooks'), warn_unknown_keys_repo),
)
DEFAULT_LANGUAGE_VERSION = cfgv.Map(
    'DefaultLanguageVersion', None,
    cfgv.NoAdditionalKeys(all_languages),