org.eclipse.m2e.editor.lemminx/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         point="org.eclipse.wildwebdeveloper.xml.lemminxExtension">
      <jar
            path="lemminx-maven.jar">
      </jar>
      <classpathExtensionProvider
            provider="org.eclipse.m2e.editor.lemminx.MavenRuntimeClasspathProvider">
      </classpathExtensionProvider>
   </extension>

</plugin>