Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/api-snapshot/profiles/net_4_x/System.Threading.Tasks.Dataflow.cs

@@ -4,7 +4,7 @@
 
 [assembly:System.Reflection.AssemblyVersionAttribute("4.0.0.0")]
 [assembly:System.CLSCompliantAttribute(true)]
-[assembly:System.Diagnostics.DebuggableAttribute((System.Diagnostics.DebuggableAttribute.DebuggingModes)(2))]
+[assembly:System.Diagnostics.DebuggableAttribute(System.Diagnostics.DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
 [assembly:System.Reflection.AssemblyCompanyAttribute("Mono development team")]
 [assembly:System.Reflection.AssemblyCopyrightAttribute("(c) Various Mono authors")]
 [assembly:System.Reflection.AssemblyDefaultAliasAttribute("System.Threading.Tasks.Dataflow.dll")]
@@ -20,32 +20,32 @@
 [assembly:System.Runtime.InteropServices.ComVisibleAttribute(false)]
 namespace System
 {
-    [System.AttributeUsageAttribute((System.AttributeTargets)(32767), AllowMultiple=true)]
+    [System.AttributeUsageAttribute(System.AttributeTargets.All, AllowMultiple=true)]
     internal partial class MonoDocumentationNoteAttribute : System.MonoTODOAttribute
     {
         public MonoDocumentationNoteAttribute(string comment) { }
     }
-    [System.AttributeUsageAttribute((System.AttributeTargets)(32767), AllowMultiple=true)]
+    [System.AttributeUsageAttribute(System.AttributeTargets.All, AllowMultiple=true)]
     internal partial class MonoExtensionAttribute : System.MonoTODOAttribute
     {
         public MonoExtensionAttribute(string comment) { }
     }
-    [System.AttributeUsageAttribute((System.AttributeTargets)(32767), AllowMultiple=true)]
+    [System.AttributeUsageAttribute(System.AttributeTargets.All, AllowMultiple=true)]
     internal partial class MonoInternalNoteAttribute : System.MonoTODOAttribute
     {
         public MonoInternalNoteAttribute(string comment) { }
     }
-    [System.AttributeUsageAttribute((System.AttributeTargets)(32767), AllowMultiple=true)]
+    [System.AttributeUsageAttribute(System.AttributeTargets.All, AllowMultiple=true)]
     internal partial class MonoLimitationAttribute : System.MonoTODOAttribute
     {
         public MonoLimitationAttribute(string comment) { }
     }
-    [System.AttributeUsageAttribute((System.AttributeTargets)(32767), AllowMultiple=true)]
+    [System.AttributeUsageAttribute(System.AttributeTargets.All, AllowMultiple=true)]
     internal partial class MonoNotSupportedAttribute : System.MonoTODOAttribute
     {
         public MonoNotSupportedAttribute(string comment) { }
     }
-    [System.AttributeUsageAttribute((System.AttributeTargets)(32767), AllowMultiple=true)]
+    [System.AttributeUsageAttribute(System.AttributeTargets.All, AllowMultiple=true)]
     internal partial class MonoTODOAttribute : System.Attribute
     {
         public MonoTODOAttribute() { }
@@ -83,14 +83,14 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<T[]> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        T[] System.Threading.Tasks.Dataflow.ISourceBlock<T[]>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T[]> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        T[] System.Threading.Tasks.Dataflow.ISourceBlock<T[]>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T[]> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<T[]>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T[]> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<T[]>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T[]> target) { throw null; }
         System.Threading.Tasks.Dataflow.DataflowMessageStatus System.Threading.Tasks.Dataflow.ITargetBlock<T>.OfferMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, T messageValue, System.Threading.Tasks.Dataflow.ISourceBlock<T> source, bool consumeToAccept) { throw null; }
         public override string ToString() { throw null; }
         public void TriggerBatch() { }
-        public bool TryReceive(System.Predicate<T[]> filter, out T[] item) { item = default(T[]); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<T[]> items) { items = default(System.Collections.Generic.IList<T[]>); throw null; }
+        public bool TryReceive(System.Predicate<T[]> filter, out T[] item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<T[]> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.BatchedJoinBlock<T1, T2>.DebugView")]
@@ -106,12 +106,12 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>>>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>>>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> target) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> filter, out System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>> item) { item = default(System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> items) { items = default(System.Collections.Generic.IList<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>>); throw null; }
+        public bool TryReceive(System.Predicate<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> filter, out System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>> item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>>> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.BatchedJoinBlock<T1, T2, T3>.DebugView")]
@@ -128,12 +128,12 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<System.Collections.Generic.IList<T1>,System.Collections.Generic.IList<T2>,System.Collections.Generic.IList<T3>>>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> target) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> filter, out System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>> item) { item = default(System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> items) { items = default(System.Collections.Generic.IList<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>>); throw null; }
+        public bool TryReceive(System.Predicate<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> filter, out System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>> item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<System.Collections.Generic.IList<T1>, System.Collections.Generic.IList<T2>, System.Collections.Generic.IList<T3>>> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.BroadcastBlock<T>.DebugView")]
@@ -145,13 +145,13 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<T> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        bool System.Threading.Tasks.Dataflow.IReceivableSourceBlock<T>.TryReceiveAll(out System.Collections.Generic.IList<T> items) { items = default(System.Collections.Generic.IList<T>); throw null; }
-        T System.Threading.Tasks.Dataflow.ISourceBlock<T>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        bool System.Threading.Tasks.Dataflow.IReceivableSourceBlock<T>.TryReceiveAll(out System.Collections.Generic.IList<T> items) { throw null; }
+        T System.Threading.Tasks.Dataflow.ISourceBlock<T>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<T>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<T>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target) { throw null; }
         System.Threading.Tasks.Dataflow.DataflowMessageStatus System.Threading.Tasks.Dataflow.ITargetBlock<T>.OfferMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, T messageValue, System.Threading.Tasks.Dataflow.ISourceBlock<T> source, bool consumeToAccept) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<T> filter, out T item) { item = default(T); throw null; }
+        public bool TryReceive(System.Predicate<T> filter, out T item) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.BufferBlock<T>.DebugView")]
@@ -164,13 +164,13 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<T> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        T System.Threading.Tasks.Dataflow.ISourceBlock<T>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        T System.Threading.Tasks.Dataflow.ISourceBlock<T>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<T>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<T>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target) { throw null; }
         System.Threading.Tasks.Dataflow.DataflowMessageStatus System.Threading.Tasks.Dataflow.ITargetBlock<T>.OfferMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, T messageValue, System.Threading.Tasks.Dataflow.ISourceBlock<T> source, bool consumeToAccept) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<T> filter, out T item) { item = default(T); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<T> items) { items = default(System.Collections.Generic.IList<T>); throw null; }
+        public bool TryReceive(System.Predicate<T> filter, out T item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<T> items) { throw null; }
     }
     public static partial class DataflowBlock
     {
@@ -198,7 +198,7 @@ namespace System.Threading.Tasks.Dataflow
         public static TOutput Receive<TOutput>(this System.Threading.Tasks.Dataflow.ISourceBlock<TOutput> source, System.TimeSpan timeout, System.Threading.CancellationToken cancellationToken) { throw null; }
         public static System.Threading.Tasks.Task<bool> SendAsync<TInput>(this System.Threading.Tasks.Dataflow.ITargetBlock<TInput> target, TInput item) { throw null; }
         public static System.Threading.Tasks.Task<bool> SendAsync<TInput>(this System.Threading.Tasks.Dataflow.ITargetBlock<TInput> target, TInput item, System.Threading.CancellationToken cancellationToken) { throw null; }
-        public static bool TryReceive<TOutput>(this System.Threading.Tasks.Dataflow.IReceivableSourceBlock<TOutput> source, out TOutput item) { item = default(TOutput); throw null; }
+        public static bool TryReceive<TOutput>(this System.Threading.Tasks.Dataflow.IReceivableSourceBlock<TOutput> source, out TOutput item) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("TaskScheduler = {TaskScheduler}, MaxMessagesPerTask = {MaxMessagesPerTask}, BoundedCapacity = {BoundedCapacity}")]
     public partial class DataflowBlockOptions
@@ -221,11 +221,11 @@ namespace System.Threading.Tasks.Dataflow
         public bool PropagateCompletion { get { throw null; } set { } }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("Id = {Id}")]
-    [System.Runtime.CompilerServices.IsReadOnlyAttribute]
     [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential)]
-    public partial struct DataflowMessageHeader : System.IEquatable<System.Threading.Tasks.Dataflow.DataflowMessageHeader>
+    public readonly partial struct DataflowMessageHeader : System.IEquatable<System.Threading.Tasks.Dataflow.DataflowMessageHeader>
     {
-        public DataflowMessageHeader(long id) { throw null;}
+        private readonly int _dummyPrimitive;
+        public DataflowMessageHeader(long id) { throw null; }
         public long Id { get { throw null; } }
         public bool IsValid { get { throw null; } }
         public override bool Equals(object obj) { throw null; }
@@ -294,12 +294,12 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2>> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        System.Tuple<T1, T2> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2>> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        System.Tuple<T1, T2> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2>> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2>>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2>> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2>>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2>> target) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<System.Tuple<T1, T2>> filter, out System.Tuple<T1, T2> item) { item = default(System.Tuple<T1, T2>); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<T1, T2>> items) { items = default(System.Collections.Generic.IList<System.Tuple<T1, T2>>); throw null; }
+        public bool TryReceive(System.Predicate<System.Tuple<T1, T2>> filter, out System.Tuple<T1, T2> item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<T1, T2>> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.JoinBlock<T1, T2, T3>.DebugView")]
@@ -315,12 +315,12 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2, T3>> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        System.Tuple<T1, T2, T3> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2, T3>> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        System.Tuple<T1, T2, T3> System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2, T3>> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2, T3>> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<System.Tuple<T1, T2, T3>> target) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<System.Tuple<T1, T2, T3>> filter, out System.Tuple<T1, T2, T3> item) { item = default(System.Tuple<T1, T2, T3>); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<T1, T2, T3>> items) { items = default(System.Collections.Generic.IList<System.Tuple<T1, T2, T3>>); throw null; }
+        public bool TryReceive(System.Predicate<System.Tuple<T1, T2, T3>> filter, out System.Tuple<T1, T2, T3> item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<System.Tuple<T1, T2, T3>> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.TransformBlock<TInput, TOutput>.DebugView")]
@@ -336,13 +336,13 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        TOutput System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        TOutput System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target) { throw null; }
         System.Threading.Tasks.Dataflow.DataflowMessageStatus System.Threading.Tasks.Dataflow.ITargetBlock<TInput>.OfferMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, TInput messageValue, System.Threading.Tasks.Dataflow.ISourceBlock<TInput> source, bool consumeToAccept) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<TOutput> filter, out TOutput item) { item = default(TOutput); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<TOutput> items) { items = default(System.Collections.Generic.IList<TOutput>); throw null; }
+        public bool TryReceive(System.Predicate<TOutput> filter, out TOutput item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<TOutput> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.TransformManyBlock<TInput, TOutput>.DebugView")]
@@ -358,13 +358,13 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        TOutput System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        TOutput System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<TOutput>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<TOutput> target) { throw null; }
         System.Threading.Tasks.Dataflow.DataflowMessageStatus System.Threading.Tasks.Dataflow.ITargetBlock<TInput>.OfferMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, TInput messageValue, System.Threading.Tasks.Dataflow.ISourceBlock<TInput> source, bool consumeToAccept) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<TOutput> filter, out TOutput item) { item = default(TOutput); throw null; }
-        public bool TryReceiveAll(out System.Collections.Generic.IList<TOutput> items) { items = default(System.Collections.Generic.IList<TOutput>); throw null; }
+        public bool TryReceive(System.Predicate<TOutput> filter, out TOutput item) { throw null; }
+        public bool TryReceiveAll(out System.Collections.Generic.IList<TOutput> items) { throw null; }
     }
     [System.Diagnostics.DebuggerDisplayAttribute("{DebuggerDisplayContent,nq}")]
     [System.Diagnostics.DebuggerTypeProxyAttribute("System.Threading.Tasks.Dataflow.WriteOnceBlock<T>.DebugView")]
@@ -376,12 +376,12 @@ namespace System.Threading.Tasks.Dataflow
         public void Complete() { }
         public System.IDisposable LinkTo(System.Threading.Tasks.Dataflow.ITargetBlock<T> target, System.Threading.Tasks.Dataflow.DataflowLinkOptions linkOptions) { throw null; }
         void System.Threading.Tasks.Dataflow.IDataflowBlock.Fault(System.Exception exception) { }
-        bool System.Threading.Tasks.Dataflow.IReceivableSourceBlock<T>.TryReceiveAll(out System.Collections.Generic.IList<T> items) { items = default(System.Collections.Generic.IList<T>); throw null; }
-        T System.Threading.Tasks.Dataflow.ISourceBlock<T>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target, out bool messageConsumed) { messageConsumed = default(bool); throw null; }
+        bool System.Threading.Tasks.Dataflow.IReceivableSourceBlock<T>.TryReceiveAll(out System.Collections.Generic.IList<T> items) { throw null; }
+        T System.Threading.Tasks.Dataflow.ISourceBlock<T>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target, out bool messageConsumed) { throw null; }
         void System.Threading.Tasks.Dataflow.ISourceBlock<T>.ReleaseReservation(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target) { }
         bool System.Threading.Tasks.Dataflow.ISourceBlock<T>.ReserveMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<T> target) { throw null; }
         System.Threading.Tasks.Dataflow.DataflowMessageStatus System.Threading.Tasks.Dataflow.ITargetBlock<T>.OfferMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, T messageValue, System.Threading.Tasks.Dataflow.ISourceBlock<T> source, bool consumeToAccept) { throw null; }
         public override string ToString() { throw null; }
-        public bool TryReceive(System.Predicate<T> filter, out T item) { item = default(T); throw null; }
+        public bool TryReceive(System.Predicate<T> filter, out T item) { throw null; }
     }
 }