assertEquals("pom.properties", pom.getValue("build/plugins[1]/executions[1]/configuration/outputFile"));
        assertEquals(1, ((List<?>) pom.getValue("build/plugins[1]/executions[1]/goals")).size());
        assertEquals("eval", pom.getValue("build/plugins[1]/executions[1]/goals[1]"));
        assertEquals(1, ((List<?>) pom.getValue("build/plugins[1]/dependencies")).size());

            String val = (String) value;

            int exprStartDelimiter = val.indexOf("${");

            if (exprStartDelimiter >= 0) {
                if (exprStartDelimiter > 0) {
                    value = val.substring(0, exprStartDelimiter) + evaluate(val.substring(exprStartDelimiter));
                } else {
                    value = evaluate(val.substring(exprStartDelimiter));
                }

        return doGet(userProperties != null ? userProperties.get(key) : null, def);
    }

    private static boolean doGet(Object val, boolean def) {
        if (val instanceof Boolean) {
            return (Boolean) val;
        } else if (val != null) {
            return Boolean.parseBoolean(val.toString());
        } else {
            return def;
        }
    }