anchor.diff:  
         if (!MimeTypes.imageTypes.contains(sourceItem.first.mime)) return;
   
  -      if (startPoint == null) startPoint = sourceItem.first.uploaded;
  -
  -      _log.info("Checking for item $itemId starting with $startPoint");
  +      //if (startPoint == null) startPoint = sourceItem.first.uploaded;
  +
  +      _log.fine("Checking for item $itemId starting with $startPoint");
   
         final ImageHash sourceHash = await _getPerceptualHash(itemId);
   
  
positive.code:         }
        }
        if (lastProcessedDate != null) {
          _log.info("Re-enqueing with new start point of $lastProcessedDate");
          final Map<String, dynamic> data = <String,dynamic>{};
          data["itemId"] = itemId;
          data["lastProcessed"] = lastProcessedDate;
  
negative.code:         new ImageHash.forImage(decodeImage(f.readAsBytesSync()), size: 16);
  
      final String perceptualHash = imageHash.toString();
      _log.fine("Perceptual hash: $perceptualHash");
  
      final ExtensionData newData = new ExtensionData();
      newData.extensionId = extensionId;
  