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

  <vendor <warning descr="Not used anymore">logo="deprecated"</warning>/>

  <idea-version since-build="133"
                <warning descr="Not used anymore">min="deprecated"</warning>
                <warning descr="Not used anymore">max="deprecated"</warning>
                />

  <extensions <warning descr="Use defaultExtensionNs instead">xmlns="<error descr="URI is not registered (Settings | Project Settings | Schemas and DTDs)">com.intellij</error>"</warning>/>

</idea-plugin>