clazz = classFromEntity(EOModelGroup.defaultGroup().entityNamed(entityName));
clazz = classFromEntity(ERXEOAccessUtilities.entityNamed(null, entityName));
    public static EOGenericRecordClazz clazzForEntityNamed(String entityName) {        EOGenericRecordClazz clazz = (EOGenericRecordClazz)allClazzes.objectForKey(entityName);        if(clazz == null) {            clazz = classFromEntity(EOModelGroup.defaultGroup().entityNamed(entityName));            clazz.setEntityName(entityName);            allClazzes.setObjectForKey(clazz,entityName);        }        if(log.isDebugEnabled()) {            log.debug("clazzForEntityNamed '" +entityName+ "': " + clazz.getClass().getName());        }        return clazz;    }