@Override
        public String toString() {
            return "GroupArgs{" +
                   "userOrGroupId='" + userOrGroupId + '\'' +
                   ", targetGroupId='" + targetGroupId + '\'' +
                   '}';
        }
Creates an account in the internal identity provider
<p>
e.g manage_users ../local.yml
--createUser admin
--createGroup Administrators
--addToGroup admin Administrators
--grantPermission Administrators Administrator
stroom-app/src/main/java/stroom/app/commands/ManageUsersCommand.java