src/vs/workbench/contrib/notebook/browser/notebookEditor.ts/NotebookEditor/_onDidChangeFileSystemProvider
class NotebookEditor:	private _onDidChangeFileSystemProvider(scheme: string): void {
		if (this.input instanceof NotebookEditorInput && this.input.resource?.scheme === scheme) {
			this._updateReadonly(this.input);
		}
	}