def METHOD_NAME(testapp, fcc_posted_CRISPR_screen, base_functional_characterization_series):
    res = testapp.get(fcc_posted_CRISPR_screen['@id'] + '@@index-data') 
    assert res.json['object']['datapoint'] is True
    testapp.patch_json(base_functional_characterization_series['@id'], {'related_datasets': []})
    res = testapp.get(fcc_posted_CRISPR_screen['@id'] + '@@index-data') 
    assert res.json['object']['datapoint'] is False