}

    private SimpleProblemCollector validateRaw(String pom) throws Exception {
        return validateRaw(pom, UnaryOperator.identity());
    }

    @SuppressWarnings("SameParameterValue")
    private SimpleProblemCollector validateEffective(String pom, int level) throws Exception {
        return validateEffective(pom, mbr -> mbr.setValidationLevel(level));
    }

        assertEquals(0, collector.getWarnings().size(), "Expected no warnings");
        assertEquals(0, collector.getFatals().size(), "Expected no fatals");
    }

    @SuppressWarnings("SameParameterValue")
    protected void assertCollectorState(
            int numFatals, int numErrors, int numWarnings, SimpleProblemCollector collector) {
        assertEquals(numErrors, collector.getErrors().size(), "Errors");