docs: def __summary(self):
          """A plaintext summary of the Action, useful for debugging."""
          text = "Time: %s\n" % self.when
          text += "Comitter: %s\n" % self.editor
  
          inst = self.timemachine.presently
  
          if self.action_type == "dl":
              text += "Deleted %s\n" % inst._object_type_text()
          elif self.action_type == "cr":
              text += "Created %s\n" % inst._object_type_text()
          else:
              text += "Modified %s\n" % inst._object_type_text()
          text += self._details(nohtml=True)
          return text