These types that can take type parameters are called **Generic types** or **Generics**.

You can use the same builtin types as generics (with square brackets and types inside):

* `list`
* `tuple`
* `set`
* `dict`

#### List { #list }

For example, let's define a variable to be a `list` of `str`.

Declare the variable, with the same colon (`:`) syntax.

                        logger.warn("Failed to delete output file: {}", outputFile.getAbsolutePath(), e);
                    }
                    return false;
                }

                if (outputFile.isFile() && outputFile.length() == 0) {
                    logger.warn("Thumbnail file is empty: id={}", thumbnailId);
                    try {
                        if (Files.deleteIfExists(outputPath2)) {

errors.failed_to_reindex=Impossibile avviare la reindicizzazione da {0} a {1}.
errors.failed_to_rebuild_config_index=Impossibile ricostruire gli indici di configurazione.
errors.no_target_index_selected=Selezionare almeno un indice di destinazione da ricostruire.
errors.operation_already_running=L'operazione è già in esecuzione su {0}.
errors.failed_to_read_request_file=Impossibile leggere il file di richiesta: {0}

            if (!moduleElements.isEmpty()) {
                context.detail("Converted " + moduleElements.size() + " <module> elements to <subproject>");
            }
        }

        // Also check inside profiles
        Element profilesElement = root.child(PROFILES).orElse(null);
        if (profilesElement != null) {
            var profileElements = profilesElement.children(PROFILE).toList();

	// Persistence layer for IAM subsystem
	store *IAMStoreSys

	// configLoaded will be closed and remain so after first load.
	configLoaded chan struct{}
}

// IAMUserType represents a user type inside MinIO server
type IAMUserType int

const (
	unknownIAMUserType IAMUserType = iota - 1
	regUser
	stsUser
	svcUser
)

// LoadGroup - loads a specific group from storage, and updates the

      decodeException.initCause(e);
      throw decodeException;
    }
  }

  /*
   * We move the static constants into this class so ProGuard can inline UnsignedLongs entirely
   * unless the user is actually calling a parse method.
   */
  private static final class ParseOverflowDetection {
    private ParseOverflowDetection() {}

After this, the client and the server have an **encrypted TCP connection**, this is what TLS provides. And then they can use that connection to start the actual **HTTP communication**.

And that's what **HTTPS** is, it's just plain **HTTP** inside a **secure TLS connection** instead of a pure (unencrypted) TCP connection.

/// tip

Notice that the encryption of the communication happens at the **TCP level**, not at the HTTP level.

///

// an object is encrypted using SSE-C or SSE-KMS. Maybe AWS S3
// computes the ETag as MD5 of the encrypted content but there is
// no way to verify this assumption since the encryption happens
// inside AWS S3.
// Therefore, S3 clients must not make any assumption about ETags
// in case of SSE-C or SSE-KMS except that the ETag is well-formed.
//
// To put all of this into a simple rule:
//
//	SSE-S3 : ETag == MD5

	// Peek into a zip archive
	xMinIOExtract = "x-minio-extract"
)

// splitZipExtensionPath splits the S3 path to the zip file and the path inside the zip:
//
//	e.g  /path/to/archive.zip/backup-2021/myimage.png => /path/to/archive.zip, backup/myimage.png
func splitZipExtensionPath(input string) (zipPath, object string, err error) {

	if err != nil {
		return nil, nil, err
	}
	if GlobalKMS == nil {
		return NewPutObjReader(hr), &ObjectOptions{MaxParity: true}, nil
	}

	// Note: Local variables with names ek, oek, etc are named inline with
	// acronyms defined here -
	// https://github.com/minio/minio/blob/master/docs/security/README.md#acronyms

	// Encrypt json encoded tier configurations
	metadata := make(map[string]string)