code: def get_usages(self):
          "Return a dictionary mapping full usages Ids to plain values"
          result = dict()
          for key, usage in self.items():
              result[key] = usage.value
          return resulf get_usages(self):
          "Return a dictionary mapping full usages Ids to plain values"
          result = dict()
          for key, usage in self.items():
              result[key] = usage.value
          return result
docs: Return a dictionary mapping full usages Ids to plain values