if (!version.isAtLeast("5.0")) {
// ExtensibleElements
ExtensibleElement component = new ExtensibleElement(ExtensibleElementTest.getFixtureElement());
Resource.Builder builder = getBaseBuilder();
builder.getExtensibleElements().get(0).setXml(component.toXML());
Resource builderComponent = builder.commit();
assertTrue(builderComponent.toHTML().indexOf(buildHTMLTextOutput(OutputFormat.HTML, "extensible.layer", "true")) != -1);
assertTrue(builderComponent.toText().indexOf(buildHTMLTextOutput(OutputFormat.TEXT, "extensible.layer", "true")) != -1);
assertTrue(builderComponent.toJSON().indexOf("\"extensible.layer\":true") != -1);
}