def create_new_source
      @source ||= DataModel::Source.create(
          {
              base_url: 'https://www.fda.gov/drugs/science-and-research-drugs/table-pharmacogenomic-biomarkers-drug-labeling',
              site_url: 'https://www.fda.gov/drugs/science-and-research-drugs/table-pharmacogenomic-biomarkers-drug-labeling',