<PackageReference Include="NETStandard.Library" Version="2.0.0" />

System.Threading.Tasks.ParallelLoopState

public class ParallelLoopState
namespace System.Threading.Tasks { public class ParallelLoopState { public bool IsExceptional { get; } public bool IsStopped { get; } public long? LowestBreakIteration { get; } public bool ShouldExitCurrentIteration { get; } public void Break(); public void Stop(); } }