public IActionResult AddDoctorTimeSlots(string doctorId, [FromBody] DoctorTimeSlots ts)
 {
     try
     {
         service.AddDoctorTimeSlot(doctorId, ts);
         return(Ok($"Time Slot added for doctor with id {doctorId}"));
     }
     catch (Exception exe)
     {
         return(BadRequest(exe.Message));
     }
 }