code: def run_mutect_with_merge(job, tumor_bam, normal_bam, univ_options, mutect_options):
      
      spawn = job.wrapJobFn(run_mutect, tumor_bam, normal_bam, univ_options,
                            mutect_options).encapsulate()
      merge = job.wrapJobFn(merge_perchrom_vcfs, spawn.rv())
      job.addChild(spawn)
      spawn.addChild(merge)
      return merge.rv()
docs: A wrapper for the the entire MuTect sub-graph.
  
      :param dict tumor_bam: Dict of bam and bai for tumor DNA-Seq
      :param dict normal_bam: Dict of bam and bai for normal DNA-Seq
      :param dict univ_options: Dict of universal options used by almost all tools
      :param dict mutect_options: Options specific to MuTect
      :return: fsID to the merged MuTect calls
      :rtype: toil.fileStore.FileID