public void setElementValue(XMLElement element, String value) {
SecurityRoleMapping srm = (SecurityRoleMapping) getDescriptor();
if (RuntimeTagNames.ROLE_NAME.equals(element.getQName())) {
srm.setRoleName(value);
} else if (RuntimeTagNames.GROUP_NAME.equals(element.getQName())) {
srm.addGroupName(value);
} else super.setElementValue(element, value);
}
/**
* write the descriptor class to a DOM tree and return it