code: public static void set(Charset charset)
      {
          final Charset current = instance.currentCharset.get();
          logger.info("Setting client charset from '{}' to '{}'", current.name(), charset.name());
          instance.currentCharset.set(charset);
      }
docs: Set the classloader-wide default Charset for the Riak client.
  
  @param charset The charset to set the classloader-wide default to.