protected override void Generate(DropIndexOperation operation, IModel model, MigrationCommandListBuilder builder)
        {
            Check.NotNull(operation, nameof(operation));
            Check.NotNull(builder, nameof(builder));

            builder
                .Append("DROP INDEX ")
                .Append(SqlGenerationHelper.DelimitIdentifier(operation.Name))
                .AppendLine(SqlGenerationHelper.StatementTerminator)
                .EndCommand();
        }
 protected override void Generate(DropIndexOperation operation, IModel model, RelationalCommandListBuilder builder)
 {
 }