maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
  1. TResult $default(
    1. List<Relay> relays,
    2. Map<String, RequiredNamespace> requiredNamespaces,
    3. Map<String, RequiredNamespace>? optionalNamespaces,
    4. Map<String, String>? sessionProperties,
    5. ConnectionMetadata proposer,
    )?, {
  2. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return orElse();
}

Implementation

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( List<Relay> relays,  Map<String, RequiredNamespace> requiredNamespaces,  Map<String, RequiredNamespace>? optionalNamespaces,  Map<String, String>? sessionProperties,  ConnectionMetadata proposer)?  $default,{required TResult orElse(),}) {final _that = this;
switch (_that) {
case _WcSessionProposeRequest() when $default != null:
return $default(_that.relays,_that.requiredNamespaces,_that.optionalNamespaces,_that.sessionProperties,_that.proposer);case _:
  return orElse();

}
}