System.Linq.CachedReflectionInfo.Contains_TSource_3 C# (CSharp) Метод

        public static MethodInfo Contains_TSource_3(Type TSource) =>
             (s_Contains_TSource_3 ??
             (s_Contains_TSource_3 = new Func<IQueryable<object>, object, IEqualityComparer<object>, bool>(Queryable.Contains).GetMethodInfo().GetGenericMethodDefinition()))
              .MakeGenericMethod(TSource);