Initializer
init(platformName:platformVersion:)
Creates a new module availability with a given platform name and platform version.
init(platformName: PlatformName, platformVersion: String?)
Parameters
platformNameA platform name, such as “iOS” or “macOS”; see PlatformName.
platformVersionA 2- or 3-component version string, such as "13.0" or "13.1.2".