openide/plugins/devkit/devkit-java-tests/testData/references/extensions/plugin.xml

<idea-plugin>

    <id>foo.bar</id>

    <extensionPoints>
        <extensionPoint qualifiedName="foo.bar" beanClass="bar.MyExtensionPoint">
          <with attribute="implementationClass" implements="bar.MyExtension"/>
        </extensionPoint>
    </extensionPoints>

    <extensions defaultExtensionNs="foo">

        <b<caret>ar/>
    </extensions>

</idea-plugin>