EOEntity e = EOModelGroup.defaultGroup().entityNamed(entityName);
EOEntity e = ERXEOAccessUtilities.entityNamed(null, entityName);
    public static void makeEditableSharedEntityNamed(String entityName) {        EOEntity e = EOModelGroup.defaultGroup().entityNamed(entityName);        if (e.isReadOnly()) {            e.setReadOnly(false);            e.setCachesObjects(false);            e.removeSharedObjectFetchSpecificationByName("FetchAll");        } else {            log.warn("MakeSharedEntityEditable: entity already editable: " + entityName);        }    }