whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. Sub2ApiAdminDashboardFilter filter,
    2. Sub2ApiAdminUsageGranularity granularity,
    3. String? model,
    4. bool includeStats,
    5. bool includeTrend,
    6. bool includeModelStats,
    7. bool includeGroupStats,
    8. bool includeUsersTrend,
    9. int usersTrendLimit,
    )?
)

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(
    Sub2ApiAdminDashboardFilter filter,
    Sub2ApiAdminUsageGranularity granularity,
    String? model,
    bool includeStats,
    bool includeTrend,
    bool includeModelStats,
    bool includeGroupStats,
    bool includeUsersTrend,
    int usersTrendLimit,
  )?
  $default,
) {
  final _that = this;
  switch (_that) {
    case _Sub2ApiAdminDashboardSnapshotRequest() when $default != null:
      return $default(
        _that.filter,
        _that.granularity,
        _that.model,
        _that.includeStats,
        _that.includeTrend,
        _that.includeModelStats,
        _that.includeGroupStats,
        _that.includeUsersTrend,
        _that.usersTrendLimit,
      );
    case _:
      return null;
  }
}