When building on macOS following instructions for minimal implementation, the icons are missing.
#elseif os(macOS)
/// SF Symbol name for camera icon for builtin button
static var videoSymbol = ""
/// SF Symbol name for camera alt icon for builtin button
static var muteVideoSelectedSymbol: String?
/// SF Symbol name for microphone icon for builtin button
static var micSymbol = ""
/// SF Symbol for microphone alt icon for builtin button
static var muteMicSelectedSymbol: String? = ""
/// SF Symbol for microphone muted flag
static var micSlashSymbol = ""
/// SF Symbol for flip camera builtin button
static var cameraRotateSymbol = ""
/// SF Symbol for beautify buitlin button
static var wandSymbol = ""
/// SF Symbol to appear behind user with camera off
static var personSymbol = ""
/// SF Symbol for sharing screen builtin button
static var screenShareSymbol = ""
/// SF Symbol for pin icon
static var pinSymbol = ""
This seems like a bug, or at least it makes the example confusing.