code: public void add(ASN1Set entry) {
          ASN1EncodableVector v = new ASN1EncodableVector();
          int size = seq.size();
          for (int i = 0; i < size; i++) {
              v.add(seq.getObjectAt(i));
          }
          v.add(entry);
          seq = new DERSequence(v);
      }
docs: Appends the specified name component entry to the current name. This can
  be used to add handle multiple AVAs in one name component.
  
  @param entry the name component to add.