@TestOnly public static void pushInjectors(@NotNull Project project) { InjectedLanguageManagerImpl cachedManager = (InjectedLanguageManagerImpl) project.getUserData(INSTANCE_CACHE); if (cachedManager == null) return; try { assert cachedManager.myInjectorsClone.isEmpty() : cachedManager.myInjectorsClone; } finally { cachedManager.myInjectorsClone.clear(); } cachedManager.myInjectorsClone.putAll(cachedManager.getInjectorMap().getBackingMap()); }