try {
        output.writeBoolean(v);
      } catch (IOException impossible) {
        throw new AssertionError(impossible);
      }
    }

    @Override
    public void writeByte(int v) {
      try {
        output.writeByte(v);
      } catch (IOException impossible) {
        throw new AssertionError(impossible);
      }
    }

    @Override
    public void writeBytes(String s) {
      try {