Unresolved plugin configuration reference

Reports unresolved references to plugin configuration elements.

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

Extension point name referencing its corresponding <extensionPoint> declaration in plugin.xml.

• com.intellij.openapi.extensions.ExtensionPointName constructor and create()

• com.intellij.openapi.extensions.ProjectExtensionPointName constructor

• com.intellij.openapi.util.KeyedExtensionCollector and inheritors constructor