<PackageReference Include="System.Reactive" Version="7.0.0-preview.1" />

System.Reactive.Concurrency.DisableOptimizationsScheduler

namespace System.Reactive.Concurrency { internal sealed class DisableOptimizationsScheduler : SchedulerWrapper { public DisableOptimizationsScheduler(IScheduler scheduler); public DisableOptimizationsScheduler(IScheduler scheduler, Type[] optimizationInterfaces); public DisableOptimizationsScheduler(IScheduler scheduler, Type[] optimizationInterfaces, ConditionalWeakTable<IScheduler, IScheduler> cache); } }