plugins/devkit/devkit-java-tests/testData/codeInsight/orderAttributeHighlighting.xml

<idea-plugin>
  <id>com.intellij</id>

  <extensionPoints>
    <!--suppress PluginXmlValidity -->
    <extensionPoint name="myEp"
                    beanClass="java.lang.String"/>
  </extensionPoints>

  <extensions defaultExtensionNs="com.intellij">
    <myEp id="id1" order="first"/>
    <myEp id="id2" order="last"/>
    <myEp id="id3" order="after id1, before <error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>
    <myEp id="id4" order="before id2, after id1"/>
    <myEp id="id5" order="before id2, after <error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>
    <myEp id="id6" order="before id6, before id5, after id1, before <error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>

    <myEp id="id7" order="first, after:<error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>
    <myEp id="id8" order="first, before:<error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>
    <myEp id="id9" order="after:<error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>
    <myEp id="id10" order="before:<error descr="Cannot resolve 'wrongId' com.intellij.myEp extension">wrongId</error>"/>

    <myEp id="id11" order="<error descr="Invalid 'order' attribute value">wrongKeyword id6</error>"/>
  </extensions>
</idea-plugin>