code: def _dump(self):  # pragma: no cover
          
  
          print(70 * "-")
          print("ID lookup table:")
          for name in self.__id_lut:
              id_ = self.__id_lut[name]
              print("  %s -> %d" % (name, id_))
  
          print(70 * "-")
          print("%-4s %-60s %s" % ("ID", "Filename", "Refcount"))
          print(70 * "-")
          for id_ in self.__entries:
              entry = self.__entries[id_]
              print("%04d %-60s %d" % (id_, entry.filename, entry.refcount))
docs: Dump contents for debugging/testing.