src/vs/workbench/contrib/notebook/common/model/notebookCellTextModel.ts/NotebookCellTextModel/internalMetadata
class NotebookCellTextModel:	set internalMetadata(newInternalMetadata: NotebookCellInternalMetadata) {
		const lastRunSuccessChanged = this._internalMetadata.lastRunSuccess !== newInternalMetadata.lastRunSuccess;
		newInternalMetadata = {
			...newInternalMetadata,
			...{ runStartTimeAdjustment: computeRunStartTimeAdjustment(this._internalMetadata, newInternalMetadata) }
		};
		this._internalMetadata = newInternalMetadata;
		this._hash = null;
		this._onDidChangeInternalMetadata.fire({ lastRunSuccessChanged });
	}