<PackageReference Include="System.Text.Json" Version="11.0.0-preview.4.26230.115" />

System.Collections.Generic.StackPolyfills

static class StackPolyfills
namespace System.Collections.Generic { internal static class StackPolyfills { public static bool TryPeek<T>(this Stack<T> stack, out T result); public static bool TryPop<T>(this Stack<T> stack, out T result); } }