public string GetRoleUserByNamePath(string roleID, string userName)
    {
        if (!header.VerifyCredentials(header.UserName, header.Password, header.Type))
        {
            return(string.Empty);
        }

        Guid gRoleID = (Guid)XmlSerializer.Deserialize(roleID);

        return(XmlSerializer.Serialize(OrganizationPublicHelper.GetRoleUserPath(gRoleID, userName)));
    }