You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: config.go
    path of file: ./repos/fibratus/pkg/alertsender/slack
    
    the code of the file until where you have to start completion: /*
 * Copyright 2019-2020 by Nedim Sab
    
func AddFlags(flags *pflag.FlagSet) {
	flags.Bool(enabled, false, "Determines whether Slack alert sender is enabled")
	flags.String(url, "", "Represents the Webhook URL of the workspace where alerts will be dispatched")
	flags.String(workspace, "", "Designates the Slack workspace where alerts will be routed")
	flags.String(channel, "", "Represents the slack channel in which to post alerts")
	flags.String(botemoji, "", "Represents the emoji icon for the Slack bot")
}