public Freelancer(double salary, string name, string surname)
{
Salary = salary;
this.name = name;
this.surname = surname;
id = tl_id.GenerateID(status);
}
/// <summary>
/// retuns new_id
/// </summary>
public string Add(FlightPlan plan)
{
string new_id = GeneratorID.GenerateID();
PlansMutex.WaitOne();
FltPlans[new_id] = plan;
PlansMutex.ReleaseMutex();
return(new_id);
}