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      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)

      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)

		return err
	}
	db.Plugins[name] = plugin
	return nil
}

// ToSQL for generate SQL string.
//
//	db.ToSQL(func(tx *gorm.DB) *gorm.DB {
//			return tx.Model(&User{}).Where(&User{Name: "foo", Age: 20})
//				.Limit(10).Offset(5)
//				.Order("name ASC")
//				.First(&User{})
//	})
func (db *DB) ToSQL(queryFn func(tx *DB) *DB) string {

  }

  /**
   * Returns the ancestor of the current domain at the given number of levels "higher" (rightward)
   * in the subdomain list. The number of levels must be non-negative, and less than {@code N-1},
   * where {@code N} is the number of parts in the domain.
   *
   * <p>TODO: Reasonable candidate for addition to public API.
   */
  private InternetDomainName ancestor(int levels) {

	type delObj struct {
		// Set index associated to this object
		setIndex int
		// Original index from the list of arguments
		// where this object is passed
		origIndex int
		// object to delete
		object ObjectToDelete
	}

	// Transform []delObj to the list of object names
	toNames := func(delObjs []delObj) []ObjectToDelete {

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      Contribution(s) alone or by combination of their Contribution(s)

      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)

      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
      (except as stated in this section) patent license to make, have made,
      use, offer to sell, sell, import, and otherwise transfer the Work,
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      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)

      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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      use, offer to sell, sell, import, and otherwise transfer the Work,
      where such license applies only to those patent claims licensable
      by such Contributor that are necessarily infringed by their
      Contribution(s) alone or by combination of their Contribution(s)