code: public static void verify(final ClassReader cr, final boolean dump,
              final PrintWriter pw) {
          verify(cr, null, dump, pw);
      }
docs: Checks a given class
  
  @param cr
  a <code>ClassReader</code> that contains bytecode for the
  analysis.
  @param dump
  true if bytecode should be printed out not only when errors
  are found.
  @param pw
  write where results going to be printed