whenOrNull<TResult extends Object?> method Null safety

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. {TResult? defaultLayout(
    1. int? maxCamStreams
    )?,
  2. TResult? singleParticipant(
    1. ParticipantId participant
    )?,
  3. TResult? activeParticipant(
      )?,
    1. TResult? portrait(
      1. PortraitVariant variant,
      2. int? maxCamStreams
      )?,
    2. TResult? custom(
      1. String compositionId,
      2. Map<String, CompositionParamValue>? compositionParams,
      3. Map<String, String>? sessionAssets
      )?}
    )
    inherited

    Implementation

    @optionalTypeArgs
    TResult? whenOrNull<TResult extends Object?>({
      TResult? Function(int? maxCamStreams)? defaultLayout,
      TResult? Function(ParticipantId participant)? singleParticipant,
      TResult? Function()? activeParticipant,
      TResult? Function(PortraitVariant variant, int? maxCamStreams)? portrait,
      TResult? Function(
              String compositionId,
              Map<String, CompositionParamValue>? compositionParams,
              Map<String, String>? sessionAssets)?
          custom,
    }) =>
        throw _privateConstructorUsedError;