code: def _parseKeyName(self, name):
          
          if name.endswith(Store.theInfoExtension):
              return {'type': 'info'}
  
          match = self.keyPattern.match(name)
          if not match:
              return None
  
          match = match.groupdict()
          match.update(type='diff')
  
          return match
docs: Returns dict with fullpath, to, from.