onSubmit property
Callback for when a form is submitted
Implementation
@override
FormEventCallback? get onSubmit =>
    (props[_$key__onSubmit___$UbiquitousDomPropsMixin] ?? null)
        as FormEventCallback?;Callback for when a form is submitted
Implementation
@override
set onSubmit(FormEventCallback? value) =>
    props[_$key__onSubmit___$UbiquitousDomPropsMixin] = value;