/**
  * Get the inherited summary header for the given class.
  *
  * @param classDoc the class the inherited member belongs to
  * @return a content tree for the inherited summary header
  */
 public Content getInheritedSummaryHeader(ClassDoc classDoc) {
   Content inheritedTree = writer.getMemberTreeHeader();
   writer.addInheritedSummaryHeader(this, classDoc, inheritedTree);
   return inheritedTree;
 }