This command can be found here in our GitHub repository. The roles command, or "requiredroles" allows you to set roles in your server that a member requires to be able to use said command. Required roles can be set for any command, but if they are set on a command that has the property "dmOnly" set to true, they will have to affect on the command. If a member doesn't have the correct roles that you have set for the command, the command execution will terminate before the command is run.
Usage: ?requiredroles <add/remove> <role> <command>