System.Linq.CachedReflectionInfo.OfType_TResult_1 C# (CSharp) Метод

        public static MethodInfo OfType_TResult_1(Type TResult) =>
             (s_OfType_TResult_1 ??
             (s_OfType_TResult_1 = new Func<IQueryable, IQueryable<object>>(Queryable.OfType<object>).GetMethodInfo().GetGenericMethodDefinition()))
              .MakeGenericMethod(TResult);