Example - Toggling friendly fire in a team

Let's say we want to create a command to toggle the state of friendly fire in a team. We want a command of the following form

/togglepvp <team>

To do this, given a team we want to use the setAllowFriendlyFire(boolean) function. As with the ObjectiveArgument, we must convert the String into a Team object.

LinkedHashMap<String, Argument> arguments = new LinkedHashMap<>();
arguments.put("team", new TeamArgument());

new CommandAPICommand("togglepvp")
    .withArguments(arguments)
    .executes((sender, args) -> {
        //The TeamArgument must be casted to a String
        String teamName = (String) args[0];
        
        //A team name can be turned into a Team using getTeam(String)
        Team team = Bukkit.getScoreboardManager().getMainScoreboard().getTeam(teamName);
        
        //Toggle pvp
        team.setAllowFriendlyFire(team.allowFriendlyFire());
    })
    .register();