Add SBS mutation class to an annotated SBS VCF
AddSBSClass(vcf)The original vcf with three additional columns
SBS96.class, SBS192.class and SBS1536.class added.
An in-memory VCF file annotated with sequence context and
transcript information by function AnnotateSBSVCF. It must
*not* contain indels and must *not* contain DBS (double base
substitutions), or triplet base substitutions etc., even if encoded as
neighboring SBS.