public async Task <CreateStepResponse> Post(CreateStepRequest request)
{
if (!await batchRepository.DoesBatchExist(request.BatchId))
{
throw Err.BatchNotFound(request.BatchId);
}
if (await stepRepository.DoesStepExist(request.BatchId, request.StepName))
{
throw Err.StepAlreadyExists(request.StepName);
}
var step = request.ConvertTo <Step>();
await stepRepository.Create(step);
return(new CreateStepResponse());
}