public static ComponentBuilder <TConfig, InputGroup> SetSize <TConfig>(this ComponentBuilder <TConfig, InputGroup> builder, InputGroupSize size)
     where TConfig : BootstrapConfig
 {
     builder.Component.ToggleCss(size);
     return(builder);
 }
 public static InputGroup <THelper> SetSize <THelper>(this InputGroup <THelper> inputGroup, InputGroupSize size)
     where THelper : BootstrapHelper <THelper>
 {
     return(inputGroup.ToggleCss(size));
 }