samples/vfs/src/META-INF/plugin.xml

<idea-plugin>
  <!-- Plugin name -->
  <name>VfsSample</name>

  <!-- Description -->
  <description>This plugin monitors the number of Java files in source paths.</description>

  <!-- Plugin version -->
  <version>1.0</version>

  <!-- Plugin's vendor -->
  <vendor>IntelliJ</vendor>

  <!-- Minimum IDEA build number with which the plugin is compatible -->
    <!--
  <idea-version since-build="2000"/>
       -->
  <!-- Plugin's application components -->
  <project-components>
    <component>
      <!-- Component's implementation class -->
      <implementation-class> myVFS.VfsSamplePlugin</implementation-class>
      <!-- Component's interface class -->
      <interface-class> myVFS.VfsSamplePlugin</interface-class>
    </component>
  </project-components>
</idea-plugin>