docs: def annotate_svs(adapter, vcf_obj):
      """Annotate all SV variants in a VCF
      
      Args:
          adapter(loqusdb.plugin.adapter)
          vcf_obj(cyvcf2.VCF)
      
      Yields:
          variant(cyvcf2.Variant)
      """
      for nr_variants, variant in enumerate(vcf_obj, 1):
          variant_info = get_coords(variant)
          match = adapter.get_structural_variant(variant_info)
          if match:
              annotate_variant(variant, match)
          yield variant