code: public Content getTagletOutput(Doc holder, TagletWriter writer) {
          if (holder instanceof ExecutableMemberDoc) {
              ExecutableMemberDoc member = (ExecutableMemberDoc) holder;
              Content output = getTagletOutput(false, member, writer,
                  member.typeParameters(), member.typeParamTags());
              output.addContent(getTagletOutput(true, member, writer,
                  member.parameters(), member.paramTags()));
              return output;
          } else {
              ClassDoc classDoc = (ClassDoc) holder;
              return getTagletOutput(false, classDoc, writer,
                  classDoc.typeParameters(), classDoc.typeParamTags());
          }
      }
docs: Given an array of <code>ParamTag</code>s,return its string representation.
  @param holder the member that holds the param tags.
  @param writer the TagletWriter that will write this tag.
  @return the TagletOutput representation of these <code>ParamTag</code>s.