code: def wasModified(self):
          
          self.filePath.restat()
          mtime = self.filePath.getmtime()
          if mtime >= self.lastModified:
              return True
          else:
              return False
docs: Check to see if this module has been modified on disk since the last
          time it was cached.
  
          @return: True if it has been modified, False if not.