code: def _get_out_file(work_dir, paired):
      
      if paired:
          if paired.normal_bam:
              base_file = "somaticSV.vcf.gz"
          else:
              base_file = "tumorSV.vcf.gz"
      else:
          base_file = "diploidSV.vcf.gz"
      return os.path.join(work_dir, "results", "variants", base_file)
docs: Retrieve manta output variant file, depending on analysis.