@Test
    void testAlwaysTrueAnd() {
        final ExpressionOperator expressionOperator = ExpressionOperator.builder()
                .addOperator(ExpressionOperator.builder().build())
                .addOperator(ExpressionOperator.builder()
                        .addOperator(ExpressionOperator.builder().build())
                        .addOperator(ExpressionOperator.builder().op(Op.OR).build()).build()
                )
                .build();

        final Condition condition = doTest(expressionOperator);

        // AND { AND {}, AND { AND{}, OR{} } } == true
        assertThat(condition).isEqualTo(DSL.noCondition());
    }
This ought to behave in a consistent way with ExpressionMatcher
stroom-db-util/src/test/java/stroom/db/util/TestCommonExpressionMapper.java