docs: public static Class<?> getCallerClass() {
  
          final StackTraceElement[] stElements = Thread.currentThread().getStackTrace();
          try {
              final StackTraceElement caller = findCaller(stElements);
              return loadClass(caller.getClassName());
          } catch (ClassNotFoundException e) {
              LOG.debug("Could not determine caller class", e);
              return null;
          }
      }