code: public static Slf4jStream of(Class<?> klass, String name) {
      if (name == null) {
        return of(klass);
      } else {
        return of(LoggerFactory.getLogger(klass.getName() + "." + name));
      }
    }
docs: Constructs a logger from a class name and an additional name,
  appended to the end. So the final logger name will be:
  <blockquote><code>klass.getName() + "." + name</code></blockquote>
  
  @param klass class which is used to get the logger's name.
  @param name logger's name, appended to the class name.
  @return Slf4jStream with a logger named after the given class.
  
  @since 1.8