when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>({
  1. required TResult deposit(
    1. String requestId,
    2. QuoteDeposit deposit
    ),
  2. required TResult transaction(
    1. String requestId,
    2. dynamic transaction
    ),
})

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>({required TResult Function( String requestId,  QuoteDeposit deposit)  deposit,required TResult Function( String requestId,  dynamic transaction)  transaction,}) {final _that = this;
switch (_that) {
case QuoteStepDeposit():
return deposit(_that.requestId,_that.deposit);case QuoteStepTransaction():
return transaction(_that.requestId,_that.transaction);}
}