src/vs/workbench/services/textfile/common/textFileEditorModelManager.ts/TextFileEditorModelManager/onDidChangeFileSystemProviderRegistrations
class TextFileEditorModelManager:	private onDidChangeFileSystemProviderRegistrations(e: IFileSystemProviderRegistrationEvent): void {
		if (!e.added) {
			return; // only if added
		}

		// Resolve models again for file systems that registered
		// to account for capability changes: extensions may
		// unregister and register the same provider with different
		// capabilities, so we want to ensure to fetch latest
		// metadata (e.g. readonly) into all models.
		this.queueModelReloads(e.scheme);
	}