18public interface IPropagatorBlock<in TInput, out TOutput> : ITargetBlock<TInput>, ISourceBlock<TOutput>

20public interface IReceivableSourceBlock<TOutput> : ISourceBlock<TOutput>

369private sealed class SendAsyncSource<TOutput> : TaskCompletionSource<bool>, ISourceBlock<TOutput>, IDebuggerDisplay

300private sealed class NopLinkPropagator : IPropagatorBlock<T, T>, ISourceBlock<T>, IDebuggerDisplay

27/// <summary>Links the <see cref="ISourceBlock{TOutput}"/> to the specified <see cref="ITargetBlock{TOutput}"/>.</summary> 34this ISourceBlock<TOutput> source, 51/// <summary>Links the <see cref="ISourceBlock{TOutput}"/> to the specified <see cref="ITargetBlock{TOutput}"/> using the specified filter.</summary> 60this ISourceBlock<TOutput> source, 68/// <summary>Links the <see cref="ISourceBlock{TOutput}"/> to the specified <see cref="ITargetBlock{TOutput}"/> using the specified filter.</summary> 79this ISourceBlock<TOutput> source, 114private readonly ISourceBlock<T> _source; 124internal FilteredLinkPropagator(ISourceBlock<T> source, ITargetBlock<T> target, Predicate<T> predicate) 148DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 169T? ISourceBlock<T>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target, out bool messageConsumed) 178bool ISourceBlock<T>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 187void ISourceBlock<T>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 203IDisposable ISourceBlock<T>.LinkTo(ITargetBlock<T> target, DataflowLinkOptions linkOptions) { throw new NotSupportedException(SR.NotSupported_MemberNotNeeded); } 642TOutput? ISourceBlock<TOutput>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target, out bool messageConsumed) 687bool ISourceBlock<TOutput>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target) 704void ISourceBlock<TOutput>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target) 736IDisposable ISourceBlock<TOutput>.LinkTo(ITargetBlock<TOutput> target, DataflowLinkOptions linkOptions) { throw new NotSupportedException(SR.NotSupported_MemberNotNeeded); } 781/// Attempts to synchronously receive an item from the <see cref="System.Threading.Tasks.Dataflow.ISourceBlock{T}"/>. 812this ISourceBlock<TOutput> source) 829this ISourceBlock<TOutput> source, CancellationToken cancellationToken) 849this ISourceBlock<TOutput> source, TimeSpan timeout) 870this ISourceBlock<TOutput> source, TimeSpan timeout, CancellationToken cancellationToken) 893this ISourceBlock<TOutput> source) 911this ISourceBlock<TOutput> source, CancellationToken cancellationToken) 932this ISourceBlock<TOutput> source, TimeSpan timeout) 955this ISourceBlock<TOutput> source, TimeSpan timeout, CancellationToken cancellationToken) 1005this ISourceBlock<TOutput> source, bool attemptTryReceive, TimeSpan timeout, CancellationToken cancellationToken) 1070private static Task<TOutput> ReceiveCoreByLinking<TOutput>(ISourceBlock<TOutput> source, int millisecondsTimeout, CancellationToken cancellationToken) 1179DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 1415public static Task<bool> OutputAvailableAsync<TOutput>(this ISourceBlock<TOutput> source) 1435this ISourceBlock<TOutput> source, CancellationToken cancellationToken) 1548DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 1600ITargetBlock<TInput> target, ISourceBlock<TOutput> source) 1622private readonly ISourceBlock<TOutput> _source; 1624public EncapsulatingPropagator(ITargetBlock<TInput> target, ISourceBlock<TOutput> source) 1649public DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept) 1731public ISourceBlock<TOutput> Source { get { return _propagator._source; } } 1764ISourceBlock<T1> source1, Action<T1> action1, 1765ISourceBlock<T2> source2, Action<T2> action2) 1802ISourceBlock<T1> source1, Action<T1> action1, 1803ISourceBlock<T2> source2, Action<T2> action2, 1863ISourceBlock<T1> source1, Action<T1> action1, 1864ISourceBlock<T2> source2, Action<T2> action2, 1865ISourceBlock<T3> source3, Action<T3> action3) 1906ISourceBlock<T1> source1, Action<T1> action1, 1907ISourceBlock<T2> source2, Action<T2> action2, 1908ISourceBlock<T3> source3, Action<T3> action3, 1958ISourceBlock<T1> source1, Action<T1> action1, 1959ISourceBlock<T2> source2, Action<T2> action2, 1960ISourceBlock<T3>? source3, Action<T3>? action3, 2006ISourceBlock<T> source, Action<T> action, int branchId, TaskScheduler scheduler, 2043ISourceBlock<T1> source1, Action<T1> action1, 2044ISourceBlock<T2> source2, Action<T2> action2, 2045ISourceBlock<T3>? source3, Action<T3>? action3, 2140int branchId, ISourceBlock<T> source, Action<T> action) 2237public DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 2285/// <summary>Creates a new <see cref="System.IObservable{TOutput}"/> abstraction over the <see cref="ISourceBlock{TOutput}"/>.</summary> 2290public static IObservable<TOutput> AsObservable<TOutput>(this ISourceBlock<TOutput> source) 2315private static readonly ConditionalWeakTable<ISourceBlock<TOutput>, SourceObservable<TOutput>> _table = 2316new ConditionalWeakTable<ISourceBlock<TOutput>, SourceObservable<TOutput>>(); 2321internal static SourceObservable<TOutput> From(ISourceBlock<TOutput> source) 2330private readonly ISourceBlock<TOutput> _source; 2339internal SourceObservable(ISourceBlock<TOutput> source) 2754DataflowMessageStatus ITargetBlock<TInput>.OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept)

25/// Indicates that the <see cref="ITargetBlock{TInput}"/> declined the message. The <see cref="ISourceBlock{TOutput}"/> still owns the message. 31/// The <see cref="ISourceBlock{TOutput}"/> still owns the message. 36/// Indicates that the <see cref="ITargetBlock{TInput}"/> tried to accept the message from the <see cref="ISourceBlock{TOutput}"/>, but the 42/// Indicates that the <see cref="ITargetBlock{TInput}"/> declined the message. The <see cref="ISourceBlock{TOutput}"/> still owns the message.

19/// <typeparam name="TOutput">Specifies the type of data supplied by the <see cref="ISourceBlock{TOutput}"/>.</typeparam>

22DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept);

290DataflowMessageStatus ITargetBlock<TInput>.OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept) 354public QueuedMap<ISourceBlock<TInput>, DataflowMessageHeader>? PostponedMessages

57Action<ISourceBlock<T[]>, int>? onItemsRemoved = null; 58Func<ISourceBlock<T[]>, T[], IList<T[]>?, int>? itemCountingFunc = null; 152DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 158T[]? ISourceBlock<T[]>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<T[]> target, out bool messageConsumed) 164bool ISourceBlock<T[]>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<T[]> target) 170void ISourceBlock<T[]>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<T[]> target) 232public QueuedMap<ISourceBlock<T>, DataflowMessageHeader>? PostponedMessages { get { return _targetDebuggingInformation.PostponedMessages; } } 275internal readonly QueuedMap<ISourceBlock<T>, DataflowMessageHeader> PostponedMessages; 277internal readonly KeyValuePair<ISourceBlock<T>, DataflowMessageHeader>[] PostponedMessagesTemp; 279internal readonly List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>> ReservedSourcesTemp; 294PostponedMessages = new QueuedMap<ISourceBlock<T>, DataflowMessageHeader>(batchSize); 295PostponedMessagesTemp = new KeyValuePair<ISourceBlock<T>, DataflowMessageHeader>[batchSize]; 296ReservedSourcesTemp = new List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>>(batchSize); 352internal DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 760QueuedMap<ISourceBlock<T>, DataflowMessageHeader> postponed = _nonGreedyState.PostponedMessages; 761KeyValuePair<ISourceBlock<T>, DataflowMessageHeader>[] postponedTemp = _nonGreedyState.PostponedMessagesTemp; 762List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>> reserved = _nonGreedyState.ReservedSourcesTemp; 792KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage = postponedTemp[i]; 796var reservedSourceAndMessage = new KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>(sourceAndMessage.Key, reservedMessage); 806KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage; 814var reservedSourceAndMessage = new KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>(sourceAndMessage.Key, reservedMessage); 878QueuedMap<ISourceBlock<T>, DataflowMessageHeader> postponed = _nonGreedyState.PostponedMessages; 879KeyValuePair<ISourceBlock<T>, DataflowMessageHeader>[] postponedTemp = _nonGreedyState.PostponedMessagesTemp; 880List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>> reserved = _nonGreedyState.ReservedSourcesTemp; 909KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage = postponedTemp[i]; 911var reservedSourceAndMessage = new KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>(sourceAndMessage.Key, reservedMessage); 920KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage; 927var reservedSourceAndMessage = new KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>(sourceAndMessage.Key, reservedMessage); 987List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>> reserved = _nonGreedyState.ReservedSourcesTemp; 996KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>> sourceAndMessage = reserved[i]; 997reserved[i] = default(KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>); // in case of exception from ConsumeMessage 1005for (int prev = 0; prev < i; prev++) reserved[prev] = default(KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>); 1010var consumedSourceAndMessage = new KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>(sourceAndMessage.Key, consumedMessage); 1019foreach (KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>> sourceAndMessage in reserved) 1039List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>> reserved = _nonGreedyState.ReservedSourcesTemp; 1048KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>> sourceAndMessage = reserved[i]; 1049reserved[i] = default(KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>); // in case of exception from ConsumeMessage 1055var consumedSourceAndMessage = new KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>(sourceAndMessage.Key, consumedMessage); 1068foreach (KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>> sourceAndMessage in reserved) 1091List<KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>> reserved = _nonGreedyState.ReservedSourcesTemp; 1094KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>> sourceAndMessage = reserved[i]; 1095reserved[i] = default(KeyValuePair<ISourceBlock<T>, KeyValuePair<DataflowMessageHeader, T>>); 1096ISourceBlock<T> source = sourceAndMessage.Key; 1184public QueuedMap<ISourceBlock<T>, DataflowMessageHeader>? PostponedMessages { get { return _target._nonGreedyState?.PostponedMessages; } }

176Tuple<IList<T1>, IList<T2>>? ISourceBlock<Tuple<IList<T1>, IList<T2>>>.ConsumeMessage( 183bool ISourceBlock<Tuple<IList<T1>, IList<T2>>>.ReserveMessage( 190void ISourceBlock<Tuple<IList<T1>, IList<T2>>>.ReleaseReservation( 433Tuple<IList<T1>, IList<T2>, IList<T3>>? ISourceBlock<Tuple<IList<T1>, IList<T2>, IList<T3>>>.ConsumeMessage( 440bool ISourceBlock<Tuple<IList<T1>, IList<T2>, IList<T3>>>.ReserveMessage( 447void ISourceBlock<Tuple<IList<T1>, IList<T2>, IList<T3>>>.ReleaseReservation( 570public DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept)

166DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 341KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage; 421T? ISourceBlock<T>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target, out bool messageConsumed) 427bool ISourceBlock<T>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 433void ISourceBlock<T>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 494/// <summary>Provides a core implementation for blocks that implement <see cref="ISourceBlock{TOutput}"/>.</summary>

57Action<ISourceBlock<T>, int>? onItemsRemoved = null; 91DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 204T? ISourceBlock<T>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target, out bool messageConsumed) 210bool ISourceBlock<T>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 216void ISourceBlock<T>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 343KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage; 454public QueuedMap<ISourceBlock<T>, DataflowMessageHeader>? PostponedMessages

61Action<ISourceBlock<Tuple<T1, T2>>, int>? onItemsRemoved = null; 169Tuple<T1, T2>? ISourceBlock<Tuple<T1, T2>>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<Tuple<T1, T2>> target, out bool messageConsumed) 175bool ISourceBlock<Tuple<T1, T2>>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<Tuple<T1, T2>> target) 181void ISourceBlock<Tuple<T1, T2>>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<Tuple<T1, T2>> target) 288Action<ISourceBlock<Tuple<T1, T2, T3>>, int>? onItemsRemoved = null; 399Tuple<T1, T2, T3>? ISourceBlock<Tuple<T1, T2, T3>>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<Tuple<T1, T2, T3>> target, out bool messageConsumed) 405bool ISourceBlock<Tuple<T1, T2, T3>>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<Tuple<T1, T2, T3>> target) 411void ISourceBlock<Tuple<T1, T2, T3>>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<Tuple<T1, T2, T3>> target) 503internal readonly QueuedMap<ISourceBlock<T>, DataflowMessageHeader> PostponedMessages = new QueuedMap<ISourceBlock<T>, DataflowMessageHeader>(); 505internal KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> ReservedMessage; 615KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> next; 660_nonGreedy.ReservedMessage = default(KeyValuePair<ISourceBlock<T>, DataflowMessageHeader>); 702KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> next; 782_nonGreedy.ReservedMessage = default(KeyValuePair<ISourceBlock<T>, DataflowMessageHeader>); 826DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept)

107Action<ISourceBlock<TOutput>, int>? onItemsRemoved = null; 371DataflowMessageStatus ITargetBlock<TInput>.OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept) 377TOutput? ISourceBlock<TOutput>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target, out bool messageConsumed) 383bool ISourceBlock<TOutput>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target) 389void ISourceBlock<TOutput>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target) 432public QueuedMap<ISourceBlock<TInput>, DataflowMessageHeader>? PostponedMessages { get { return _targetDebuggingInformation.PostponedMessages; } }

112Action<ISourceBlock<TOutput>, int>? onItemsRemoved = null; 577DataflowMessageStatus ITargetBlock<TInput>.OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept) 583TOutput? ISourceBlock<TOutput>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target, out bool messageConsumed) 589bool ISourceBlock<TOutput>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target) 595void ISourceBlock<TOutput>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<TOutput> target) 638public QueuedMap<ISourceBlock<TInput>, DataflowMessageHeader>? PostponedMessages { get { return _targetDebuggingInformation.PostponedMessages; } }

347DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 387T? ISourceBlock<T>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target, out bool messageConsumed) 408bool ISourceBlock<T>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 421void ISourceBlock<T>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<T> target)

498QueuedMap<ISourceBlock<T>, DataflowMessageHeader> postponedMessages, 510KeyValuePair<ISourceBlock<T>, DataflowMessageHeader> sourceAndMessage; 642internal readonly QueuedMap<ISourceBlock<TInput>, DataflowMessageHeader> PostponedMessages = 643new QueuedMap<ISourceBlock<TInput>, DataflowMessageHeader>();

179internal void DataflowBlockLinking<T>(ISourceBlock<T> source, ITargetBlock<T> target) 201internal void DataflowBlockUnlinking<T>(ISourceBlock<T> source, ITargetBlock<T> target)

28/// <summary>Provides a core implementation for blocks that implement <see cref="ISourceBlock{TOutput}"/>.</summary> 60private readonly ISourceBlock<TOutput> _owningSource; 67private readonly Action<ISourceBlock<TOutput>> _completeAction; 72private readonly Action<ISourceBlock<TOutput>, int>? _itemsRemovedAction; 74private readonly Func<ISourceBlock<TOutput>, TOutput, IList<TOutput>?, int>? _itemCountingFunc; 103ISourceBlock<TOutput> owningSource, DataflowBlockOptions dataflowBlockOptions, 104Action<ISourceBlock<TOutput>> completeAction, 105Action<ISourceBlock<TOutput>, int>? itemsRemovedAction = null, 106Func<ISourceBlock<TOutput>, TOutput, IList<TOutput>?, int>? itemCountingFunc = null)

111internal DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept) 125private DataflowMessageStatus OfferMessage_Slow(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept)

181internal DataflowMessageStatus OfferMessage(DataflowMessageHeader messageHeader, TInput messageValue, ISourceBlock<TInput>? source, bool consumeToAccept) 625KeyValuePair<ISourceBlock<TInput>, DataflowMessageHeader> element; 859internal QueuedMap<ISourceBlock<TInput>, DataflowMessageHeader>? PostponedMessages

60private readonly ISourceBlock<T> _owningSource; 72internal TargetRegistry(ISourceBlock<T> owningSource) 303private readonly ISourceBlock<T> _owningSource; 310internal NopLinkPropagator(ISourceBlock<T> owningSource, ITargetBlock<T> target) 321DataflowMessageStatus ITargetBlock<T>.OfferMessage(DataflowMessageHeader messageHeader, T messageValue, ISourceBlock<T>? source, bool consumeToAccept) 328T? ISourceBlock<T>.ConsumeMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target, out bool messageConsumed) 334bool ISourceBlock<T>.ReserveMessage(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 340void ISourceBlock<T>.ReleaseReservation(DataflowMessageHeader messageHeader, ITargetBlock<T> target) 353IDisposable ISourceBlock<T>.LinkTo(ITargetBlock<T> target, DataflowLinkOptions linkOptions) { throw new NotSupportedException(SR.NotSupported_MemberNotNeeded); }