code: protected void addSummaryLink(ClassDoc cd, ProgramElementDoc member,
              Content tdSummary) {
          addSummaryLink(LinkInfoImpl.Kind.MEMBER, cd, member, tdSummary);
      }
docs: Add the summary link for the member.
  
  @param cd the class doc to be documented
  @param member the member to be documented
  @param tdSummary the content tree to which the link will be added