code: public static synchronized Cache
  getDefaultCache(int dclass) {
  	DClass.check(dclass);
  	Cache c = (Cache) defaultCaches.get(Mnemonic.toInteger(dclass));
  	if (c == null) {
  		c = new Cache(dclass);
  		defaultCaches.put(Mnemonic.toInteger(dclass), c);
  	}
  	return c;
  }
docs: Gets the Cache that will be used as the default for the specified
  class by future Lookups.
  @param dclass The class whose cache is being retrieved.
  @return The default cache for the specified class.