public async Task <IEnumerable <FriendViewModel> > GetAll(string descricao = "")
        {
            var data = await _friend.GetAll();

            if (!string.IsNullOrEmpty(descricao) || !string.IsNullOrWhiteSpace(descricao))
            {
                data = data.Where(x => x.Name.Contains(descricao) || x.Email.Contains(descricao));
            }

            return(_mapper.Map <IEnumerable <FriendViewModel> >(data));
        }