code: def _filter_to_info(in_file, data):
      
      header = ("""##INFO=<ID=DKFZBias,Number=.,Type=String,"""
                """Description="Bias estimation based on unequal read support from DKFZBiasFilterVariant Depth">\n""")
      out_file = "%s-ann.vcf" % utils.splitext_plus(in_file)[0]
      if not utils.file_uptodate(out_file, in_file) and not utils.file_uptodate(out_file + ".gz", in_file):
          with file_transaction(data, out_file) as tx_out_file:
              with utils.open_gzipsafe(in_file) as in_handle:
                  with open(tx_out_file, "w") as out_handle:
                      for line in in_handle:
                          if line.startswith("#CHROM"):
                              out_handle.write(header + line)
                          elif line.startswith("#"):
                              out_handle.write(line)
                          else:
                              out_handle.write(_rec_filter_to_info(line))
      return vcfutils.bgzip_and_index(out_file, data["config"])
docs: Move DKFZ filter information into INFO field.