System.Linq.CachedReflectionInfo.LongCount_TSource_1 C# (CSharp) Method

        public static MethodInfo LongCount_TSource_1(Type TSource) =>
             (s_LongCount_TSource_1 ??
             (s_LongCount_TSource_1 = new Func<IQueryable<object>, long>(Queryable.LongCount).GetMethodInfo().GetGenericMethodDefinition()))
              .MakeGenericMethod(TSource);