@Override
        public void extensionRemoved(@NotNull KeyedLazyInstance<PsiReferenceContributor> extension,
                                     @NotNull PluginDescriptor pluginDescriptor) {
          reset();
        }
@Override
        public void extensionRemoved(@NotNull KeyedLazyInstance<PsiReferenceContributor> extension,
                                     @NotNull PluginDescriptor pluginDescriptor)