System.Linq.CachedReflectionInfo.FirstOrDefault_TSource_1 C# (CSharp) 메소드

        public static MethodInfo FirstOrDefault_TSource_1(Type TSource) =>
             (s_FirstOrDefault_TSource_1 ??
             (s_FirstOrDefault_TSource_1 = new Func<IQueryable<object>, object>(Queryable.FirstOrDefault).GetMethodInfo().GetGenericMethodDefinition()))
              .MakeGenericMethod(TSource);