Askme.Domain.Question.IsOwner C# (CSharp) Method

        public virtual bool IsOwner(User asker)
        {
            return user.Equals(asker);
        }

 public virtual void AcceptAnswer(Question question,Answer answer)
 {
     if (!question.IsOwner(this))
         throw new NotSupportedException("An answer can be accepted only by the question's owner");
     question.AcceptSolution(answer);
 }