code: void checkSuper(ClassFile cf) throws ConstantPoolException {
          String sname = cf.getSuperclassName();
          DeprData dd = db.getTypeDeprecated(sname);
          if (dd != null) {
              printType("scan.out.extends", cf, sname, dd.isForRemoval());
          }
      }
docs: Checks the superclass of this class.
  
  @param cf the ClassFile of this class
  @throws ConstantPoolException if a constant pool entry cannot be found