code: def write_versions(dirs, items):
      
      genomes = {}
      for d in items:
          genomes[d["genome_build"]] = d.get("reference", {}).get("versions")
      out_file = _get_out_file(dirs)
      found_versions = False
      if genomes and out_file:
          with open(out_file, "w") as out_handle:
              writer = csv.writer(out_handle)
              writer.writerow(["genome", "resource", "version"])
              for genome, version_file in genomes.items():
                  if not version_file:
                      genome_dir = install.get_genome_dir(genome, dirs.get("galaxy"), items[0])
                      if genome_dir:
                          version_file = os.path.join(genome_dir, "versions.csv")
                  if version_file and os.path.exists(version_file):
                      found_versions = True
                      with open(version_file) as in_handle:
                          reader = csv.reader(in_handle)
                          for parts in reader:
                              if len(parts) >= 2:
                                  resource, version = parts[:2]
                                  writer.writerow([genome, resource, version])
      if found_versions:
          return out_file
docs: Write data versioning for genomes present in the configuration.