public FriendModel GetUserById(string userId)
{
Func <FriendModel, bool> predicate = user => user.Id.Equals(userId);
var result = Friends.FirstOrDefault(predicate);
if (result == null)
{
result = Pending.FirstOrDefault(predicate);
}
if (result == null)
{
result = Blocked.FirstOrDefault(predicate);
}
if (result == null)
{
result = Requested.FirstOrDefault(predicate);
}
return(result);
}
