code: private void appendBreadCrumbEntry(StringBuffer buffer, String target, String label) {
  
          if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(target)) {
              buffer.append("<a href=\"#!").append(target).append(
                  "\" title=\"" + CmsDomUtil.escapeXml(label) + "\"><span>").append(label).append("</span></a>");
          } else {
              buffer.append(
                  "<span class=\"o-tools-breadcrumb-active\" title=\""
                      + CmsDomUtil.escapeXml(label)
                      + "\"><span>").append(label).append("</span></span>");
          }
      }
docs: Appends a bread crumb entry.<p>
  
  @param buffer the string buffer to append to
  @param target the target state
  @param label the entry label