code: public void buildPropertiesSummary(XMLNode node, Content memberSummaryTree) {
          MemberSummaryWriter writer =
                  memberSummaryWriters.get(VisibleMemberMap.Kind.PROPERTIES);
          VisibleMemberMap visibleMemberMap =
                  getVisibleMemberMap(VisibleMemberMap.Kind.PROPERTIES);
          addSummary(writer, visibleMemberMap, true, memberSummaryTree);
      }
docs: Build the summary for the fields.