ZContact.Attr.fromString(name);
Contact.Attr.fromString(name);
    public void addAttr(String name, String value) throws JspTagException {        if (!mForce) {            try {                ZContact.Attr.fromString(name); // make sure it is a known attr name            } catch (ServiceException e) {                throw new JspTagException(e);            }        }        mAttrs.put(name, value);    }