public DataStoreTypes.KeyedItems <DataStoreTypes.ItemDescriptor> GetAll(DataStoreTypes.DataKind kind) =>
 throw new NotImplementedException();
 public bool Upsert(DataStoreTypes.DataKind kind, string key, DataStoreTypes.ItemDescriptor item) =>
 throw new NotImplementedException();
 public DataStoreTypes.ItemDescriptor?Get(DataStoreTypes.DataKind kind, string key) =>
 throw new NotImplementedException();