code: def to_vcf_line(self):
      v = self.strip_star_allele()
      return f'{v.contig}\t{v.position}\t.\t{v.ref}\t{",".join(v.alts)}\t.\t.\n'
  
imports: import gzip
  import io
  import json
  import os
  import re
  import shlex
  import subprocess
  import sys
  import time
  from typing import List
label_desc: Use image node_id 4 for calling the Variant obj's underlying member method code with example usage: obj.to_vcf_line() and returns: v, str, v, str, v, str, str, str