public async Task <Staff> AddAvailability(AddAvailabilityCommand addAvailabilityCommand)
        {
            Staff        staff        = FindExistingStaff(addAvailabilityCommand.SiteId, addAvailabilityCommand.StaffId);
            Availability availability = staff.AddAvailability(addAvailabilityCommand.ServiceItemId,
                                                              addAvailabilityCommand.LocationId,
                                                              addAvailabilityCommand.StartDateTime,
                                                              addAvailabilityCommand.EndDateTime,
                                                              addAvailabilityCommand.Sunday,
                                                              addAvailabilityCommand.Monday,
                                                              addAvailabilityCommand.Tuesday,
                                                              addAvailabilityCommand.Wednesday,
                                                              addAvailabilityCommand.Thursday,
                                                              addAvailabilityCommand.Friday,
                                                              addAvailabilityCommand.Saturday,

                                                              addAvailabilityCommand.BookableEndDateTime);

            await _businessIntegrationEventService.PublishThroughEventBusAsync(new AvailabilityAddedByStaffEvent(
                                                                                   availability.StaffId,
                                                                                   availability.SiteId,
                                                                                   availability.StaffId,
                                                                                   availability.ServiceItemId,
                                                                                   availability.LocationId,
                                                                                   availability.StartDateTime,
                                                                                   availability.EndDateTime,
                                                                                   addAvailabilityCommand.Sunday,
                                                                                   addAvailabilityCommand.Monday,
                                                                                   addAvailabilityCommand.Tuesday,
                                                                                   addAvailabilityCommand.Wednesday,
                                                                                   addAvailabilityCommand.Thursday,
                                                                                   addAvailabilityCommand.Friday,
                                                                                   addAvailabilityCommand.Saturday,
                                                                                   availability.BookableEndDateTime
                                                                                   ));

            //_staffRepository.UnitOfWork.Commit();

            return(staff);
        }