download a single file for a dataset

            Parameters
            ==========
            dataset: the string identified of the dataset
                     should be in format [owner]/[dataset-name]
            file_name: the dataset configuration file
            path: if defined, download to this location
            force: force the download if the file already exists (default False)
            quiet: suppress verbose output (default is True)

def dataset_download_file(self,
                              dataset,
                              file_name,
                              path=None,
                              force=False,
                              quiet=True):
        """ download a single file for a dataset

            Parameters
            ==========
            dataset: the string identified of the dataset
                     should be in format [owner]/[dataset-name]
            file_name: the dataset configuration file
            path: if defined, download to this location
            force: force the download if the file already exists (default False)
            quiet: suppress verbose output (default is True)
        """
        if '/' in dataset:
            self.validate_dataset_string(dataset)
            dataset_urls = dataset.split('/')
            owner_slug = dataset_urls[0]
            dataset_slug = dataset_urls[1]
        else:
            owner_slug = self.get_config_value(self.CONFIG_NAME_USER)
            dataset_slug = dataset

        if path is None:
            effective_path = self.get_default_download_dir(
                'datasets', owner_slug, dataset_slug)
        else:
            effective_path = path

        response = self.process_response(
            self.datasets_download_file_with_http_info(
                owner_slug=owner_slug,
                dataset_slug=dataset_slug,
                file_name=file_name,
                _preload_content=False))
        url = response.retries.history[0].redirect_location.split('?')[0]
        outfile = os.path.join(effective_path, url.split('/')[-1])
        if force or self.download_needed(response, outfile, quiet):
            self.download_file(response, outfile, quiet)
            return True
        else:
            return False