public static MethodInfo SingleOrDefault_TSource_2(Type TSource) =>
(s_SingleOrDefault_TSource_2 ??
(s_SingleOrDefault_TSource_2 = new Func<IQueryable<object>, Expression<Func<object, bool>>, object>(Queryable.SingleOrDefault).GetMethodInfo().GetGenericMethodDefinition()))
.MakeGenericMethod(TSource);