public static String formatExpression(final Expression expression) {
    return formatExpression(expression, FormatOptions.of(s -> false));
  }
@Test
  public void shouldFormatArithmeticUnary() {
    assertThat(ExpressionFormatter.formatExpression(
        ArithmeticUnaryExpression.negative(Optional.empty(), new LongLiteral(1))),
        equalTo("-1"));
  }