Downloads the Lenz, Hensley & Doré (2017) dust map, placing it in the
    default :obj:`dustmaps` data directory.

def fetch():
    """
    Downloads the Lenz, Hensley & Doré (2017) dust map, placing it in the
    default :obj:`dustmaps` data directory.
    """
    doi = '10.7910/DVN/AFJNWJ'
    fname = os.path.join(
        data_dir(),
        'lenz2017',
        'ebv_lhd.hpx.fits')
    fetch_utils.dataverse_download_doi(
        doi, fname,
        file_requirements={'filename': 'ebv_lhd.hpx.fits'})