src/vs/editor/browser/widget/diffEditorWidget.ts/DiffEditorWidget/_beginUpdateDecorationsSoon
class DiffEditorWidget:	private _beginUpdateDecorationsSoon(): void {
		// Clear previous timeout if necessary
		if (this._beginUpdateDecorationsTimeout !== -1) {
			window.clearTimeout(this._beginUpdateDecorationsTimeout);
			this._beginUpdateDecorationsTimeout = -1;
		}
		this._beginUpdateDecorationsTimeout = window.setTimeout(() => this._beginUpdateDecorations(), DiffEditorWidget.UPDATE_DIFF_DECORATIONS_DELAY);
	}