System.Linq.CachedReflectionInfo.SelectMany_Index_TSource_TCollection_TResult_3 C# (CSharp) Метод

        public static MethodInfo SelectMany_Index_TSource_TCollection_TResult_3(Type TSource, Type TCollection, Type TResult) =>
             (s_SelectMany_Index_TSource_TCollection_TResult_3 ??
             (s_SelectMany_Index_TSource_TCollection_TResult_3 = new Func<IQueryable<object>, Expression<Func<object, int, IEnumerable<object>>>, Expression<Func<object, object, object>>, IQueryable<object>>(Queryable.SelectMany).GetMethodInfo().GetGenericMethodDefinition()))
              .MakeGenericMethod(TSource, TCollection, TResult);