Fix ref files from System.IO.Compression and System.IO.Compression.Brotli with autogenerated file using GenAPI

src/libraries/System.IO.Compression.Brotli/ref/System.IO.Compression.Brotli.cs

@@ -6,9 +6,10 @@
 
 namespace System.IO.Compression
 {
-    public sealed class BrotliCompressionOptions
+    public sealed partial class BrotliCompressionOptions
     {
-        public int Quality { get; set; }
+        public BrotliCompressionOptions() { }
+        public int Quality { get { throw null; } set { } }
     }
     public partial struct BrotliDecoder : System.IDisposable
     {

src/libraries/System.IO.Compression/ref/System.IO.Compression.cs

@@ -131,18 +131,19 @@ public enum ZipArchiveMode
         Create = 1,
         Update = 2,
     }
-    public sealed class ZLibCompressionOptions
+    public sealed partial class ZLibCompressionOptions
     {
-        public int CompressionLevel { get; set; }
-        public ZLibCompressionStrategy CompressionStrategy { get; set; }
+        public ZLibCompressionOptions() { }
+        public int CompressionLevel { get { throw null; } set { } }
+        public System.IO.Compression.ZLibCompressionStrategy CompressionStrategy { get { throw null; } set { } }
     }
     public enum ZLibCompressionStrategy
     {
         Default = 0,
         Filtered = 1,
         HuffmanOnly = 2,
         RunLengthEncoding = 3,
-        Fixed = 4
+        Fixed = 4,
     }
     public sealed partial class ZLibStream : System.IO.Stream
     {

src/libraries/System.IO.Compression/src/ReferenceAssemblyExclusions.txt

@@ -0,0 +1,2 @@
+T:System.IO.Compression.ZLibException
+

src/libraries/System.IO.Compression/src/System.IO.Compression.csproj

@@ -4,6 +4,7 @@
     <TargetFrameworks>$(NetCoreAppCurrent)-windows;$(NetCoreAppCurrent)-unix;$(NetCoreAppCurrent)-browser;$(NetCoreAppCurrent)-wasi;$(NetCoreAppCurrent)</TargetFrameworks>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <UseCompilerGeneratedDocXmlFile>false</UseCompilerGeneratedDocXmlFile>
+    <GenAPIExcludeApiList>ReferenceAssemblyExclusions.txt</GenAPIExcludeApiList>
   </PropertyGroup>
 
   <!-- DesignTimeBuild requires all the TargetFramework Derived Properties to not be present in the first property group. -->

src/libraries/System.IO.Compression/src/System/IO/Compression/DeflateZLib/DeflateStream.cs

@@ -406,7 +406,7 @@ public override Task<int> ReadAsync(byte[] buffer, int offset, int count, Cancel
             return ReadAsyncMemory(new Memory<byte>(buffer, offset, count), cancellationToken).AsTask();
         }
 
-        public override ValueTask<int> ReadAsync(Memory<byte> buffer, CancellationToken cancellationToken = default(CancellationToken))
+        public override ValueTask<int> ReadAsync(Memory<byte> buffer, CancellationToken cancellationToken = default)
         {
             if (GetType() != typeof(DeflateStream))
             {
@@ -813,7 +813,7 @@ public override Task WriteAsync(byte[] buffer, int offset, int count, Cancellati
             return WriteAsyncMemory(new ReadOnlyMemory<byte>(buffer, offset, count), cancellationToken).AsTask();
         }
 
-        public override ValueTask WriteAsync(ReadOnlyMemory<byte> buffer, CancellationToken cancellationToken)
+        public override ValueTask WriteAsync(ReadOnlyMemory<byte> buffer, CancellationToken cancellationToken = default)
         {
             if (GetType() != typeof(DeflateStream))
             {