src/vs/workbench/contrib/remote/browser/tunnelView.ts/ActionBarRenderer/renderButton
class ActionBarRenderer:	renderButton(element: ActionBarCell, templateData: IActionBarTemplateData): void {
		templateData.container.style.paddingLeft = '7px';
		templateData.container.style.height = '28px';
		templateData.button = this._register(new Button(templateData.container));
		templateData.button.label = element.label;
		templateData.button.element.title = element.tooltip;
		this._register(attachButtonStyler(templateData.button, this.themeService));
		this._register(templateData.button.onDidClick(() => {
			this.commandService.executeCommand(ForwardPortAction.INLINE_ID);
		}));
	}