ReadonlykeyReadonlylegacyReadonlymigratesVersions a migration step is registered for, ascending.
ReadonlymoduleReadonlyscopeReadonlysyncableWhether the key participates in Settings Sync.
ReadonlyttlReadonlyvalidatedWhether a schema validates what is read and written.
ReadonlyversionThe schema version values are written at.
One typed storage key.