public static String formatExpression(final Expression expression) {
    return formatExpression(expression, FormatOptions.of(s -> false));
  }
@Test
  public void shouldFormatTimestampLiteral() {
    assertThat(ExpressionFormatter.formatExpression(new TimestampLiteral(new Timestamp(500))), equalTo("1970-01-01T00:00:00.500"));
  }