FunctionsCommandHandleSubcommandCompletionCommandHandleSubcommandCompletion CallableCommandHandleSubcommandCompletion(cmd: ICommand, remaining: string[], parts: string[], options?: { setCommand?: string }): booleanParameterscmd: ICommandremaining: string[]parts: string[]optionaloptions: { setCommand?: string }optionalsetCommand: stringReturns booleanif completion was handled