|  | @@ -51,7 +51,7 @@ namespace Grpc.Microbenchmarks
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				|  |  |          private void ThreadBody(int iterations, CompletionRegistry optionalSharedRegistry)
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				|  |  |          {
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				|  |  | -            var completionRegistry = optionalSharedRegistry ?? new CompletionRegistry(environment, () => BatchContextSafeHandle.Create(), () => RequestCallContextSafeHandle.Create());
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				|  |  | +            var completionRegistry = optionalSharedRegistry ?? new CompletionRegistry(environment, () => throw new NotImplementedException(), () => throw new NotImplementedException());
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				|  |  |              var ctx = BatchContextSafeHandle.Create();
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				|  |  |    
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				|  |  |              var stopwatch = Stopwatch.StartNew();
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