code: @Override
      public void visit(final Husband husband) {
          this.husbandFound = husband;
          if (husband.isSet()) {
              father = husband.getFather();
              spouses.add(father);
          }
      }
docs: Visit a Husband. We track this and, if set, the Person who is the
  father.
  
  @see GedObjectVisitor#visit(Husband)