code: public static void setLocale(String newLocale) throws IllegalArgumentException, UnsupportedLocaleException {
          Preconditions.checkArgument(newLocale == null, "newLocale == null");
          int size = assertLocaleSupportedByAllControllers(newLocale);
          changeLocaleOnAllControllers(newLocale, size);
      }
docs: Sets the locale on all <em>logdoc</em> <code>Log</code> classes.
  
  @param newLocale
  the new locale, cannot be <code>null</code>.
  @throws IllegalArgumentException
  if <code>newLocale == null</code>.
  @throws UnsupportedLocaleException
  if the specified locale is not supported by all registered <em>logdoc</em> <code>Log</code> classes.