if (!activeExternalProfiles.isEmpty()) {
            Properties profileProps = new Properties();
            for (Profile profile : activeExternalProfiles) {
                profileProps.putAll(profile.getProperties());
            }
            profileProps.putAll(profileActivationContext.getUserProperties());
            profileActivationContext.setUserProperties(profileProps);
        }

    assertFalse(result.containsKey("not here"));

    // Test loading system properties
    result = Maps.fromProperties(System.getProperties());
    assertTrue(result.containsKey("java.version"));

    // Test that defaults work, too.
    testProp = new Properties(System.getProperties());
    String override = "test\njava.version : hidden";

    testProp.load(new StringReader(override));

            if (hasExpression(m.getVersion())) {
                Severity versionExpressionSeverity = Severity.ERROR;
                if (Boolean.parseBoolean(
                        m.getProperties().getProperty(BUILD_ALLOW_EXPRESSION_IN_EFFECTIVE_PROJECT_VERSION))) {
                    versionExpressionSeverity = Severity.WARNING;
                }
                addViolation(
                        problems,