code: def _capture_stdout(callable: Callable[..., CaptureResult], *args, **kwargs) -> CaptureResult:
          
          stream = StringIO()
          with redirect_stdout(stream):
              return_value = callable(*args, **kwargs)
          assert return_value.stdout is None, "stdout appears to have already been captured"
          return CaptureResult(return_value=return_value.return_value, stdout=stream.getvalue(),
                               stderr=return_value.stderr, exception=return_value.exception)
docs: Captures content written to standard out.
          :param callable: the callable to wrap
          :param args: positional arguments passed to the callable
          :param kwargs: keyword arguments passed to the callable
          :return: the captured result