code: def _get_showcase_dataset_dict(self, dataset):
          # type: (Union[hdx.data.dataset.Dataset,Dict,str]) -> Dict
          
          if isinstance(dataset, hdx.data.dataset.Dataset) or isinstance(dataset, dict):
              if 'id' not in dataset:
                  dataset = hdx.data.dataset.Dataset.read_from_hdx(dataset['name'])
              dataset = dataset['id']
          elif not isinstance(dataset, str):
              raise hdx.data.hdxobject.HDXError('Type %s cannot be added as a dataset!' % type(dataset).__name__)
          if is_valid_uuid(dataset) is False:
              raise hdx.data.hdxobject.HDXError('%s is not a valid dataset id!' % dataset)
          return {'showcase_id': self.data['id'], 'package_id': dataset}
docs: Get showcase dataset dict
  
          Args:
              showcase (Union[Showcase,Dict,str]): Either a showcase id or Showcase metadata from a Showcase object or dictionary
  
          Returns:
              Dict: showcase dataset dict