public static IIdentityDatabaseTable <TRoleClaim> GetRoleClaimDatabaseTable <TRoleClaim, TKey>(this IIdentityContext_WithUserAndRoleClaims <TRoleClaim, TKey> context)
     where TKey : IEquatable <TKey>
     where TRoleClaim : class, IIdentityRoleClaim <TKey>
 => (IIdentityDatabaseTable <TRoleClaim>)context.GetRoleClaimQueryable();
 public static IQueryable <IIdentityRoleClaim <TKey> > GetRoleClaimQueryable <TRoleClaim, TKey>(this IIdentityContext_WithUserAndRoleClaims <TRoleClaim, TKey> context)
     where TKey : IEquatable <TKey>
     where TRoleClaim : class, IIdentityRoleClaim <TKey>
 => context.DbGetQueryable <IIdentityRoleClaim <TKey> >();