public String execute(Reference reference, String[] arguments) {
if(arguments.length != 1){
System.out.println("Invalid amount of arguments.");
return "null";
}else{
Command command = reference.getCommand(arguments[0]);
if (command != null) {
System.out.println(command.getHelp());
return command.getHelp();
}else{
System.out.println("Command \""+arguments[0]+"\" not found.");
return "null";
}
}