code: public void cacheClassInfo( String name, Class<?> value ) {
          if ( value != null ) {
              absoluteClassCache.put(name, value);
              // eagerly start the member cache
              memberCache.init(value);
          }
          else
              absoluteNonClasses.add( name );
      }
docs: Cache info about whether name is a class or not.
  @param value
  if value is non-null, cache the class
  if value is null, set the flag that it is *not* a class to
  speed later resolution