Restored old API for plugin id

force_bdss/tests/probe_classes/probe_extension_plugin.py

 from force_bdss.base_extension_plugin import BaseExtensionPlugin
+from force_bdss.ids import plugin_id
 from force_bdss.tests.probe_classes.data_source import ProbeDataSourceFactory
 from force_bdss.tests.probe_classes.mco import ProbeMCOFactory
 from force_bdss.tests.probe_classes.notification_listener import \
@@ -7,11 +8,7 @@ from force_bdss.tests.probe_classes.ui_hooks import ProbeUIHooksFactory
 
 
 class ProbeExtensionPlugin(BaseExtensionPlugin):
-    def get_producer(self):
-        return "enthought"
-
-    def get_identifier(self):
-        return "test"
+    id = plugin_id("enthought", "test", 0)
 
     def get_factory_classes(self):
         return [