code: def build_vcf_deletion(x, genome_2bit):
      
      base1 = genome_2bit[x.chrom1].get(x.start1, x.start1 + 1).upper()
      id1 = "hydra{0}".format(x.name)
      return VcfLine(x.chrom1, x.start1, id1, base1, "<DEL>",
                     _vcf_single_end_info(x, "DEL", True))
docs: Provide representation of deletion from BedPE breakpoints.