public static MethodInfo Distinct_TSource_2(Type TSource) =>
(s_Distinct_TSource_2 ??
(s_Distinct_TSource_2 = new Func<IQueryable<object>, IEqualityComparer<object>, IQueryable<object>>(Queryable.Distinct).GetMethodInfo().GetGenericMethodDefinition()))
.MakeGenericMethod(TSource);