code: public static synchronized void setLoadFromJar(Class<?> clazz)
      {
          loader = Optional.ofNullable(clazz);
          if (loader.isPresent())
          {
              setSeparator(Constant.SLASH);
          }
          else
          {
              setSeparator(File.separator);
          }
      }
docs: Activate or no the resources loading from *.jar. A <code>null</code> value will disable load from jar.
  
  @param clazz The class loader reference resources entry point (may be <code>null</code>).