public User FindUserQualif(int id)
{
if (!UsersQualif.ContainsKey(id))
{
throw new Exception($"Unable to find the user with id: {id}");
}
return(UsersQualif[id]);
}
public void AddUserQualif(User newUser)
{
if (UsersQualif.ContainsKey(newUser.Id))
{
return;
}
UsersQualif.Add(newUser.Id, newUser);
newUser.City = this;
}