src/vs/workbench/contrib/notebook/common/notebookEditorModel.ts/SimpleNotebookEditorModel/hasAssociatedFilePath
class SimpleNotebookEditorModel:	hasAssociatedFilePath(): boolean {
		return !SimpleNotebookEditorModel._isStoredFileWorkingCopy(this._workingCopy) && !!this._workingCopy?.hasAssociatedFilePath;
	}