whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String id,
    2. String? targetUserId,
    3. String? targetOrgId,
    4. GrantType grantType,
    5. PlanTier? plan,
    6. int? discountPct,
    7. int? aiBoostMessages,
    8. int? trialExtensionDays,
    9. DateTime startsAt,
    10. DateTime? endsAt,
    11. String? reason,
    12. String? grantedBy,
    13. DateTime createdAt,
    14. DateTime? revokedAt,
    15. String? revokedBy,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

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

Implementation

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String id,  String? targetUserId,  String? targetOrgId,  GrantType grantType,  PlanTier? plan,  int? discountPct,  int? aiBoostMessages,  int? trialExtensionDays,  DateTime startsAt,  DateTime? endsAt,  String? reason,  String? grantedBy,  DateTime createdAt,  DateTime? revokedAt,  String? revokedBy)?  $default,) {final _that = this;
switch (_that) {
case _AdminGrant() when $default != null:
return $default(_that.id,_that.targetUserId,_that.targetOrgId,_that.grantType,_that.plan,_that.discountPct,_that.aiBoostMessages,_that.trialExtensionDays,_that.startsAt,_that.endsAt,_that.reason,_that.grantedBy,_that.createdAt,_that.revokedAt,_that.revokedBy);case _:
  return null;

}
}