map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>({
  1. required TResult never(
    1. ExpirationNever value
    ),
  2. required TResult timeout(
    1. ExpirationTimeout value
    ),
  3. required TResult timestamp(
    1. ExpirationTimestamp value
    ),
})

A switch-like method, using callbacks.

Callbacks receives the raw object, upcasted. It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult map<TResult extends Object?>({required TResult Function( ExpirationNever value)  never,required TResult Function( ExpirationTimeout value)  timeout,required TResult Function( ExpirationTimestamp value)  timestamp,}){
final _that = this;
switch (_that) {
case ExpirationNever():
return never(_that);case ExpirationTimeout():
return timeout(_that);case ExpirationTimestamp():
return timestamp(_that);}
}