appending(_:)
Returns a new text suggestions delegate of a different, but Hashable suggestion item type with the items and behaviors of the receiving delegate and other concatenated. When the returned delegate is connected to a text field, all suggestion items provided from the first suggestions delegate appear before all those from the second suggestions delegate, visually separated by a separator.
Declaration
@MainActor func appending<T>(_ other: some NSTextSuggestionsDelegate) -> some NSTextSuggestionsDelegate<AnyHashable> where T : Hashable