).Row().Scan(&count)
	})

	return count > 0
}

// RenameIndex rename index from oldName to newName
func (m Migrator) RenameIndex(value interface{}, oldName, newName string) error {
	return m.RunWithValue(value, func(stmt *gorm.Statement) error {
		return m.DB.Exec(
			"ALTER TABLE ? RENAME INDEX ? TO ?",
			m.CurrentTable(stmt), clause.Column{Name: oldName}, clause.Column{Name: newName},
		).Error

Acho que `Union[SomeType, None]` é mais explícito quanto ao significado.

É apenas uma questão de palavras e nomes. Mas essas palavras podem influenciar como você e sua equipe pensam sobre o código.

Como exemplo, veja esta função:

```python
from typing import Optional


def say_hi(name: Optional[str]):
    print(f"Hey {name}!")
```

### Translate In Your Language

Fess is internationalized software.

If you want to add labels/messages for your language, please translate properties file and then rename to fess\_\*\_[lang].properties.

* [fess_label_en.properties](https://github.com/codelibs/fess/blob/master/src/main/resources/fess_label_en.properties)

            .forEach { report ->
                fileSystemOperations.copy {
                    from(report)
                    into(rootBuildDir)
                    rename { "report$projectPathName-${report.parentFile.name}-${report.name}" }
                }
            }
    }

    /**
     * Zip a list of files with same root directory to a zip file.
     *

Experimental properties MUST be stable.
While the corresponding feature can be changed or dropped without notice, users should receive a notice about the property rename or removal.

Experimental properties MUST NOT be supplemented with command-line options.
They can always be passed via `-D` on the command line.
The feature should leave the experimental stage to receive a build option.

filegroup(
    name = "get_tensorflow_dll_import_lib",
    srcs = ["//tensorflow:tensorflow.dll"],
    output_group = "interface_library",
    visibility = ["//visibility:public"],
)

# Rename the import library for tensorflow.dll from tensorflow.dll.if.lib to tensorflow.lib
genrule(
    name = "tensorflow_dll_import_lib",
    srcs = [":get_tensorflow_dll_import_lib"],
    outs = ["tensorflow.lib"],

        excludedPackages.add("org.gradle.plugins.ide.eclipse.model");
        excludedPackages.add("org.gradle.plugins.ide.idea.model");
        excludedPackages.add("org.gradle.api.tasks.testing.logging");

        // TODO - rename some incubating types to remove collisions and then remove these exclusions
        excludedPackages.add("org.gradle.plugins.binaries.model");

	if err := DB.Migrator().RenameIndex(&IndexStruct{}, "idx_index_structs_name", "idx_users_name_1"); err != nil {
		t.Fatalf("no error should happen when rename index, but got %v", err)
	}

	if !DB.Migrator().HasIndex(&IndexStruct{}, "idx_users_name_1") {
		t.Fatalf("Should find index for user's name after rename")
	}

	if err := DB.Migrator().DropIndex(&IndexStruct{}, "idx_users_name_1"); err != nil {

 *  Breaking: Replace `SocketPolicy` with a new type, `SocketEffect`. It splits triggers (request
    start, response body, etc.) from effects (closing the socket, closing the stream, etc.).

 *  Breaking: Rename `RecordedRequest.sequenceNumber` to `exchangeIndex` and introduce
    `connectionIndex` on that type. These properties may be useful when testing features like
    connection reuse.

	// Note that there is no list of names as there is for 386 and amd64.
	register[obj.Rconv(arm64.REGSP)] = int16(arm64.REGSP)
	for i := arm64.REG_R0; i <= arm64.REG_R31; i++ {
		register[obj.Rconv(i)] = int16(i)
	}
	// Rename R18 to R18_PLATFORM to avoid accidental use.
	register["R18_PLATFORM"] = register["R18"]
	delete(register, "R18")
	for i := arm64.REG_F0; i <= arm64.REG_F31; i++ {
		register[obj.Rconv(i)] = int16(i)
	}