code: def exec_all_endpoints(self, *args, **kwargs):
          
          results = []
          for handler in self.endpoints:
              if isinstance(handler, weakref.ref):
                  handler = handler()
              if self.adapt_params:
                  bind = self._adapt_call_params(handler, args, kwargs)
                  res = handler(*bind.args, **bind.kwargs)
              else:
                  res = handler(*args, **kwargs)
              if isinstance(res, MultipleResults):
                  if res.done:
                      results += res.results
                  else:
                      results += res._results
              elif res is not NoResult:
                  results.append(res)
          return MultipleResults(results, concurrent=self.concurrent, owner=self)
docs: Execute each passed endpoint and collect the results. If a result
          is anoter `MultipleResults` it will extend the results with those
          contained therein. If the result is `NoResult`, skip the addition.