+
+-- | The type that will be returned from every file import attempt. If
+-- there was an error, its description will be wrapped in an Err. If
+-- we successfully imported records, the number of records imported
+-- will be wrapped in a Succ.
+--
+-- Anything else will be wrapped in a "Info" constructor;
+-- i.e. somewhere between success and failure. This is like an
+-- 'Either' with three choices. A "Info" return value means that
+-- the XML document *was* processed, so it should be removed.
+--
+data ImportResult = Err String | Info String | Succ Int
+