String clazz = getAttributeValueIngoreEmpty(e, TAG_HANDLER_ATTR_CLASS);
assertNotEmpty(targetTypes, "<"+TAG_HANDLER+"> attribute ["+TAG_HANDLER_ATTR_TARGET_TYPE+"] must not be empty");
assertNotEmpty(clazz, "<"+TAG_HANDLER+"> attribute ["+TAG_HANDLER_ATTR_CLASS+"] must not be empty");
TargetHandler handler=(TargetHandler)createClassInstance(clazz);
String[] ttps=SbmUtils.split(targetTypes, ',');
for(String tt : ttps)
typeTargetHandler.addTargetHandler(tt.trim(), handler);
}