bug fix

wcs/__init__.py

@@ -155,7 +155,7 @@ class WCS(OWS):
         else:
             logging.info("No time subset found")
 
-    def _addBandsMetadata(layer, lyrobj):
+    def _addBandsMetadata(self, layer, lyrobj):
         """Adds wmcs_band* metadata to the lyrobj"""
 
         for i in layer.axisDescriptions: