public static void merge(final Readable input,
                           final Message.Builder builder)
                           throws IOException {
    merge(input, ExtensionRegistry.getEmptyRegistry(), builder);
  }
public static void merge ( final Readable input , final Message . Builder builder ) throws IOException { merge ( input , ExtensionRegistry . getEmptyRegistry ( ) , builder ) ; }
Parse a text-format message from {@code input} and merge the contents
into {@code builder}.