pkg go/types, func NewLabel(token.Pos, *Package, string) *Label
pkg go/types, func NewMap(Type, Type) *Map
pkg go/types, func NewMethodSet(Type) *MethodSet
pkg go/types, func NewNamed(*TypeName, Type, []*Func) *Named
pkg go/types, func NewPackage(string, string) *Package
pkg go/types, func NewParam(token.Pos, *Package, string, Type) *Var

    String oldName = Thread.currentThread().getName();
    final Supplier<String> newName = Suppliers.ofInstance("MyCrazyThreadName");
    Callable<@Nullable Void> callable =
        new Callable<@Nullable Void>() {
          @Override
          public @Nullable Void call() throws Exception {
            assertEquals(Thread.currentThread().getName(), newName.get());
            return null;
          }
        };

func (m Migrator) RenameColumn(value interface{}, oldName, newName string) error {
	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
		if stmt.Schema != nil {
			if field := stmt.Schema.LookUpField(oldName); field != nil {
				oldName = field.DBName
			}

			if field := stmt.Schema.LookUpField(newName); field != nil {
				newName = field.DBName
			}
		}

	GetTypeAliases(databaseTypeName string) []string

	// Tables
	CreateTable(dst ...interface{}) error
	DropTable(dst ...interface{}) error
	HasTable(dst interface{}) bool
	RenameTable(oldName, newName interface{}) error
	GetTables() (tableList []string, err error)
	TableType(dst interface{}) (TableType, error)

	// Columns
	AddColumn(dst interface{}, field string) error
	DropColumn(dst interface{}, field string) error

		}
	}

	type NewColumnStruct struct {
		gorm.Model
		Name    string
		NewName string
	}

	if err := DB.Table("column_structs").Migrator().AddColumn(&NewColumnStruct{}, "NewName"); err != nil {
		t.Fatalf("Failed to add column, got %v", err)
	}

	if !DB.Table("column_structs").Migrator().HasColumn(&NewColumnStruct{}, "NewName") {
		t.Fatalf("Failed to find added column")
	}

    }
    // TODO(b/145674566): We use Graph::NewName to get a unique name here but
    // this may not be consistent with python's naming policy.
    mutex_lock l(g_->mu);
    op_.reset(new TF_OperationDescription(g_, op_type_.c_str(),
                                          g_->graph.NewName(op_name).c_str()));
    return absl::OkStatus();
  }

	} else if langs[0].Name != "upsert-new" {
		t.Errorf("should update name on conflict, but got name %+v", langs[0].Name)
	}

	lang = Language{Code: "upsert", Name: "Upsert-Newname"}
	if err := DB.Clauses(clause.OnConflict{UpdateAll: true}).Create(&lang).Error; err != nil {
		t.Fatalf("failed to upsert, got %v", err)
	}

	var result Language

	if addPosition {
		getNewIdent = func(newName string) *ast.Ident {
			mangledIdent := ast.NewIdent(newName)
			if len(newName) == len(r.Name.Go) {
				return mangledIdent
			}
			p := fset.Position((*r.Expr).End())
			if p.Column == 0 {
				return mangledIdent
			}
			return ast.NewIdent(fmt.Sprintf("%s /*line :%d:%d*/", newName, p.Line, p.Column))
		}
	}

		if sp.Version == "" && len(sp.Statements) == 0 {
			sp = nil
		}
	}
	opts := updateServiceAccountOpts{
		secretKey:     updateReq.NewSecretKey,
		status:        updateReq.NewStatus,
		name:          updateReq.NewName,
		description:   updateReq.NewDescription,
		expiration:    updateReq.NewExpiration,
		sessionPolicy: sp,
	}
	updatedAt, err := globalIAMSys.UpdateServiceAccount(ctx, accessKey, opts)
	if err != nil {