//this should mostly be true :)
            //if it isn't true then the syntax highlighting won't spoil the view too much anyway
            newElement.setAttribute("language", "java");
            nodes.push(newElement);
            return true;
        }

        @Override
        public void onText(String text) {
            nodes.appendChild(text);
        }

                }
                // Attributes
                for (String attr : dom.getAttributeNames()) {
                    org = dom.getAttribute(attr);
                    val = interpolate(org);
                    if (org != val) {
                        dom.setAttribute(attr, val);
                    }
                }
                // Children
                for (int i = 0, l = dom.getChildCount(); i < l; i++) {

        PlexusConfiguration[] ces = c.getChildren();
        if (ces != null) {
            for (PlexusConfiguration ce : ces) {
                String value = ce.getValue(null);
                String defaultValue = ce.getAttribute("default-value", null);
                if (value != null || defaultValue != null) {
                    XmlNode e = XmlNode.newInstance(
                            ce.getName(),
                            value,

            if (paramConfig != null) {
                parameter.setExpression(paramConfig.getValue(null));
                parameter.setDefaultValue(paramConfig.getAttribute("default-value"));
            }

            parameters.add(parameter);
        }

        mojo.setParameters(parameters);

        // TODO this should not need to be handed off...

    @Nonnull
    default Map<String, String> getAttributes() {
        return attributes();
    }

    @Deprecated(since = "4.0.0", forRemoval = true)
    @Nullable
    default String getAttribute(@Nonnull String name) {
        return attribute(name);
    }

    @Deprecated(since = "4.0.0", forRemoval = true)
    @Nonnull
    default List<XmlNode> getChildren() {
        return children();
    }

                session, session.getCurrentProject(), execution, new HashSet<>());
        assertNotNull(execution.getConfiguration());
        assertEquals("1.0", execution.getConfiguration().getChild("version").getAttribute("default-value"));
    }

    @Test
    void testExecutionListeners() throws Exception {
        final File pom = getProject("project-basic");
        final MavenSession session = createMavenSession(pom);

                try {
                    value = expressionEvaluator.evaluate(expression);

                    if (value == null) {
                        value = config.getAttribute("default-value", null);
                    }
                } catch (ExpressionEvaluationException e) {
                    String msg = "Error evaluating the expression '" + expression + "' for configuration value '"