src/vs/workbench/contrib/notebook/common/notebookEditorInput.ts/NotebookEditorInput/matches
class NotebookEditorInput:	override matches(otherInput: EditorInput | IUntypedEditorInput): boolean {
		if (super.matches(otherInput)) {
			return true;
		}
		if (otherInput instanceof NotebookEditorInput) {
			return this.viewType === otherInput.viewType && isEqual(this.resource, otherInput.resource);
		}
		return false;
	}