code: public static synchronized void setLocale(String newLocale) throws UnsupportedLocaleException {
          Preconditions.checkArgument(newLocale == null, "newLocale == null");
          if (!newLocale.equals(CURRENT_LOCALE)) {
              LogCentral.setLocale(newLocale);
              CURRENT_LOCALE = newLocale;
          }
      }
docs: Sets the locale for the complete Logdoc library.
  
  @param newLocale
  the new locale, cannot be <code>null</code>.
  @throws UnsupportedLocaleException
  if the specified locale is not supported by <em>all</em> registered <code>Log</code>
  classes.