oSizes: sizeHistogram{0: 1, 1: 1, 2: 2, 4: 1},
		},
		{
			path:  "/dir1/dira",
			isNil: true,
		},
		{
			path:  "/nonexistying",
			isNil: true,
		},
	}

	for _, w := range want {
		p := path.Join(bucket, w.path)
		t.Run(p, func(t *testing.T) {
			e := got.find(p)
			if w.isNil {
				if e != nil {
					t.Error("want nil, got", e)
				}
				return
			}

					if !fieldValue.IsValid() {
						fieldValue = reflect.New(fieldType)
					} else if fieldValue.IsNil() {
						fieldValue.Set(reflect.New(fieldType))
					}
					fieldValue.Elem().Set(reflectV)
					return
				} else if reflectValType.ConvertibleTo(fieldType) {
					if fieldValue.IsNil() {
						fieldValue.Set(reflect.New(fieldType))
					}

					fieldValue.Elem().Set(reflectV.Convert(fieldType))

							frv := rel.Field.ReflectValueOf(db.Statement.Context, rv.Index(i))
							if frv.Kind() != reflect.Ptr {
								reflectValue = reflect.Append(reflectValue, frv.Addr())
							} else {
								if frv.IsNil() {
									continue
								}
								reflectValue = reflect.Append(reflectValue, frv)
							}
						}

						tx := preloadDB(db, reflectValue, reflectValue.Interface())

					// same nested structure
					if _, ok := joinedNestedSchemaMap[fullRelsName]; !ok {
						if value := reflect.ValueOf(values[idx]).Elem(); value.Kind() == reflect.Ptr && value.IsNil() {
							isNilPtrValue = true
							break
						}

						relValue.Set(reflect.New(relValue.Type().Elem()))
						joinedNestedSchemaMap[fullRelsName] = nil
					}
				}
				currentReflectValue = relValue

			}
		}
	}

	// assign stmt.ReflectValue
	if stmt.Dest != nil {
		stmt.ReflectValue = reflect.ValueOf(stmt.Dest)
		for stmt.ReflectValue.Kind() == reflect.Ptr {
			if stmt.ReflectValue.IsNil() && stmt.ReflectValue.CanAddr() {
				stmt.ReflectValue.Set(reflect.New(stmt.ReflectValue.Type().Elem()))
			}

			stmt.ReflectValue = stmt.ReflectValue.Elem()
		}
		if !stmt.ReflectValue.IsValid() {

		db.AddError(committer.Commit())
	} else {
		db.AddError(ErrInvalidTransaction)
	}
	return db
}

// Rollback rollbacks the changes in a transaction
func (db *DB) Rollback() *DB {
	if committer, ok := db.Statement.ConnPool.(TxCommitter); ok && committer != nil {
		if !reflect.ValueOf(committer).IsNil() {
			db.AddError(committer.Rollback())
		}

			stmt.Vars = append(stmt.Vars, v.Value)
		case clause.Column, clause.Table:
			stmt.QuoteTo(writer, v)
		case Valuer:
			reflectValue := reflect.ValueOf(v)
			if reflectValue.Kind() == reflect.Ptr && reflectValue.IsNil() {
				stmt.AddVar(writer, nil)
			} else {
				stmt.AddVar(writer, v.GormValue(stmt.Context, stmt.DB))
			}
		case clause.Interface:
			c := clause.Clause{Name: v.Name()}
			v.MergeClause(&c)