Referencing extension with an unknown id might result in errors at runtime.

The following extension points are supported:

• com.intellij.advancedSetting in resource bundle advanced.setting.* key
• com.intellij.experimentalFeature in Experiments.isFeatureEnabled()/setFeatureEnabled()
• com.intellij.notificationGroup in Notification constructor and NotificationGroupManager.getNotificationGroup()
• com.intellij.registryKey in Registry methods key parameter
• com.intellij.toolWindow in resource bundle toolwindow.stripe.* key