ticket #10: mark IExporter.process() options argument as optional

diff --git a/telemeta/export/api.py b/telemeta/export/api.py
index a02590c333319920541666b14de828b40d36506a..e5e1a06fca58e3a4e9875eb8b95b9963ddd1b2f3 100644 (file)
--- a/telemeta/export/api.py
+++ b/telemeta/export/api.py
@@ -47,7 +47,7 @@ class IExporter(Interface):
         temporary directory should be used if that's not the case.
         """
 
-    def process(item_id, source, metadata, options):
+    def process(item_id, source, metadata, options=None):
         """Perform the exporting process and return the absolute path 
         to the resulting file.