private String buildTypeId(final String subCommand) {
        return String.join(".",
                COMMAND_NAME,
                Objects.requireNonNull(subCommand));
    }
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