protected override void Generate(CreateSequenceOperation operation, IModel model, MigrationCommandListBuilder builder)
 {
     throw new NotSupportedException("MyCat doesn't support sequence operation.");
 }
 protected override void Generate(CreateSequenceOperation operation, IModel model, MigrationCommandListBuilder builder)
 {
     throw new NotSupportedException(SqliteStrings.SequencesNotSupported);
 }