public Expression rewrite(final Expression expression) {
    return new ExpressionTreeRewriter<>(new OperatorPlugin()::process)
        .rewrite(expression, null);
  }
@Test
  public void shouldPassRowTimeStringsToTheParser() {
    // Given:
    final Expression predicate = getPredicate(
        "SELECT * FROM orders where ROWTIME = '2017-01-01T00:44:00.000';");

    // When:
    rewriter.rewrite(predicate);

    // Then:
    verify(parser).parse("2017-01-01T00:44:00.000");
  }