<PackageReference Include="System.Threading.Tasks.Extensions" Version="4.6.0" />

ThrowHelper

static class ThrowHelper
using System.Runtime.CompilerServices; namespace System { internal static class ThrowHelper { internal static void ThrowArgumentNullException(System.ExceptionArgument argument) { throw GetArgumentNullException(argument); } internal static void ThrowArgumentOutOfRangeException(System.ExceptionArgument argument) { throw GetArgumentOutOfRangeException(argument); } private static ArgumentNullException GetArgumentNullException(System.ExceptionArgument argument) { return new ArgumentNullException(GetArgumentName(argument)); } private static ArgumentOutOfRangeException GetArgumentOutOfRangeException(System.ExceptionArgument argument) { return new ArgumentOutOfRangeException(GetArgumentName(argument)); } [MethodImpl(MethodImplOptions.NoInlining)] private static string GetArgumentName(System.ExceptionArgument argument) { return argument.ToString(); } } }