src/vs/workbench/contrib/terminal/browser/xterm/decorationAddon.ts/DecorationAddon/_updateCommandDecorationVisibility
class DecorationAddon:	private _updateCommandDecorationVisibility(commandDecorationElement: Element): void {
		if (this._showGutterDecorations) {
			commandDecorationElement.classList.remove(DecorationSelector.Hide);
		} else {
			commandDecorationElement.classList.add(DecorationSelector.Hide);
		}
	}