src/vs/workbench/contrib/notebook/common/model/notebookCellTextModel.ts/NotebookCellTextModel/spliceNotebookCellOutputs
class NotebookCellTextModel:	spliceNotebookCellOutputs(splice: NotebookCellOutputsSplice): void {
		this.outputs.splice(splice.start, splice.deleteCount, ...splice.newOutputs);
		this._onDidChangeOutputs.fire(splice);
	}