src/vs/workbench/contrib/welcome/walkThrough/browser/walkThroughPart.ts/WalkThroughPart/saveTextEditorViewState
class WalkThroughPart:	private saveTextEditorViewState(input: WalkThroughInput): void {
		const scrollPosition = this.scrollbar.getScrollPosition();

		if (this.group) {
			this.editorMemento.saveEditorState(this.group, input, {
				viewState: {
					scrollTop: scrollPosition.scrollTop,
					scrollLeft: scrollPosition.scrollLeft
				}
			});
		}
	}