public static ComponentBuilder <MvcBootstrapConfig <TModel>, FormGroup> FormGroup <TComponent, TModel, TValue>( this BootstrapHelper <MvcBootstrapConfig <TModel>, TComponent> helper, Expression <Func <TModel, TValue> > labelExpression) where TComponent : Component, ICanCreate <FormGroup> { ComponentBuilder <MvcBootstrapConfig <TModel>, FormGroup> builder = helper.FormGroup(); builder.GetComponent().ControlLabel = builder.GetHelper().ControlLabel(labelExpression).GetComponent(); return(builder); }