public List <IStation> GetAllStationsByID(string id)
{
IBranch branch = GetBranchByID(id);
return(branch != null?branch.GetAllStations() : null);
}
public List <IStation> GetAllStationsByName(string branchName)
{
IBranch branch = GetBranchByName(branchName);
return(branch != null?branch.GetAllStations() : null);
}