code: private void addConstantMember(FieldDoc member, HtmlTree trTree) {
          trTree.addContent(getTypeColumn(member));
          trTree.addContent(getNameColumn(member));
          trTree.addContent(getValue(member));
      }
docs: Add the row for the constant summary table.
  
  @param member the field to be documented.
  @param trTree an htmltree object for the table row