return "is deprecated: " + parameter.getDeprecated();
    }

    @Override
    protected void doValidate(
            MavenSession mavenSession,
            MojoDescriptor mojoDescriptor,
            Class<?> mojoClass,
            PlexusConfiguration pomConfiguration,
            ExpressionEvaluator expressionEvaluator) {
        if (mojoDescriptor.getDeprecated() != null) {