docs: def annotate(ctx, variant_file, sv):
      """Annotate the variants in a VCF
  
      """
      adapter = ctx.obj['adapter']
  
      variant_path = os.path.abspath(variant_file)
  
      expected_type = 'snv'
      if sv:
          expected_type = 'sv'
  
      if 'sv':
          nr_cases = adapter.nr_cases(sv_cases=True)
      else:
          nr_cases = adapter.nr_cases(snv_cases=True)
      LOG.info("Found {0} {1} cases in database".format(nr_cases, expected_type))
  
      vcf_obj = get_file_handle(variant_path)
      add_headers(vcf_obj, nr_cases=nr_cases, sv=sv)
      # Print the headers
      for header_line in vcf_obj.raw_header.split('\n'):
          if len(header_line) == 0:
              continue
          click.echo(header_line)
  
      start_inserting = datetime.now()
      
      if sv:
          annotated_variants = annotate_svs(adapter, vcf_obj)
      else:
          annotated_variants = annotate_snvs(adapter, vcf_obj)
      # try:
      for variant in annotated_variants:
          click.echo(str(variant).rstrip())