versions

One or more versions of the launch template. Valid values depend on whether you are describing a specified launch template (by ID or name) or all launch templates in your account.

To describe one or more versions of a specified launch template, valid values are $Latest, $Default, and numbers.

To describe all launch templates in your account that are defined as the latest version, the valid value is $Latest. To describe all launch templates in your account that are defined as the default version, the valid value is $Default. You can specify $Latest and $Default in the same request. You cannot specify numbers.