Called immediately in case asynchronous submit action resolves.
Definition
typeOnSubmitted= ({ res:Response,// Accumulated response from the async submit action serialized:Object,// Serialized fields fields:Object,// The state of the fields form:ReactComponent// Reference to the Form component}) =>void
Note: It's a good practice to name the onSubmitted callback methods relatively to the form's primary action. For "Registration" form - onUserRegistered, for "Add product to Cart" form - onProductAdded, etc.