public async Task <IEnumerable <Post> > HandleAsync()
        {
            var expression = new GetPostByCategoryQueryExpression
            {
                Category = Category
            };

            return(IncludeData
                        ? await Context.Posts
                   .Where(expression.AsExpression())
                   .Include(p => p.Author).Include(p => p.Blog).Include(p => p.Category)
                   .ToListAsync()
                        : await Context.Posts
                   .Where(expression.AsExpression())
                   .ToListAsync());
        }
        public IEnumerable <Post> Handle()
        {
            var expression = new GetPostByCategoryQueryExpression
            {
                Category = Category
            };

            return(IncludeData
                        ? Context.Posts
                   .Where(expression.AsExpression())
                   .Include(p => p.Author).Include(p => p.Blog).Include(p => p.Category)
                   .ToList()
                        : Context.Posts
                   .Where(expression.AsExpression())
                   .ToList());
        }