when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. PgRepo repo,
    2. PgStatus status,
    3. String error,
    4. PgLinkResponse? response,
    5. PgInvoiceResponse? pgInvoiceResponse,
    6. PgInvoiceResponse? pgInvoiceResponseError,
    )
)

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?>(TResult Function( PgRepo repo,  PgStatus status,  String error,  PgLinkResponse? response,  PgInvoiceResponse? pgInvoiceResponse,  PgInvoiceResponse? pgInvoiceResponseError)  $default,) {final _that = this;
switch (_that) {
case _PgState():
return $default(_that.repo,_that.status,_that.error,_that.response,_that.pgInvoiceResponse,_that.pgInvoiceResponseError);case _:
  throw StateError('Unexpected subclass');

}
}