public static ComponentBuilder <TConfig, ListGroupItem> SetState <TConfig>(this ComponentBuilder <TConfig, ListGroupItem> builder, ListGroupItemState state)
     where TConfig : BootstrapConfig
 {
     builder.Component.ToggleCss(state);
     return(builder);
 }
 public static ListGroupItem <THelper> SetState <THelper>(this ListGroupItem <THelper> listGroupItem, ListGroupItemState state)
     where THelper : BootstrapHelper <THelper>
 {
     return(listGroupItem.ToggleCss(state));
 }