code: def _add_kwarg_datasets(datasets, kwargs):
      
      for test_method_suffix, dataset in six.iteritems(kwargs):
          datasets[test_method_suffix] = dataset
docs: Add data sets of the given kwargs.
  
      :param datasets:
          The dict where to accumulate data sets.
      :type datasets:
          `dict`
      :param kwargs:
          Dict of pre-named data sets.
      :type kwargs:
          `dict` of `unicode` to varies