Macro optional_access_status 

macro_rules! optional_access_status {
    () => { ... };
    (Public) => { ... };
    (HuggingFace) => { ... };
    (Local) => { ... };
    (Registration) => { ... };
    (ContactAuthors) => { ... };
    (NotYetReleased) => { ... };
    (DependsOnOther) => { ... };
    (Deprecated) => { ... };
}

Helper macro to handle optional access_status fields in dataset definitions. Returns DatasetAccessibility::Public as the default when not specified.