Prose\HostsByRoleTrait::retrieveHostsDetails PHP Method

    protected function retrieveHostsDetails($roleName)
    {
        // do we have this role?
        $role = fromRolesTable()->getDetailsForRole($roleName);
        if (!count(get_object_vars($role))) {
            throw new E5xx_ActionFailed(__METHOD__, "unknown role '{$roleName}'");
        }
        return $role;
    }