get
open override fun getSuggestions(context: CommandContext<SharedSuggestionProvider>, builder: SuggestionsBuilder): CompletableFuture<Suggestions>
Generates username suggestions for the add subcommand.
This filters the server's visible player list by:
Removing any usernames already present in the local friend list.
Matching the remaining usernames against the last token typed in the command (case-insensitive substring match).
Return
a future that completes with the constructed suggestions
Parameters
context
the command context containing the input and source
builder
the suggestions builder to populate