public async Task CreateCashPaymentType(int projectid, int targetUserId)
{
var project = await ProjectRepository.GetProjectForFinanceSetup(projectid);
project.RequestMasterAccess(CurrentUserId, acl => acl.CanManageMoney);
project.RequestMasterAccess(targetUserId);
var targetMaster = project.ProjectAcls.Single(a => a.UserId == targetUserId);
if (targetMaster.GetCashPaymentType() != null)
{
throw new JoinRpgInvalidUserException();
}
project.PaymentTypes.Add(PaymentType.CreateCash(targetMaster.UserId));
await UnitOfWork.SaveChangesAsync();
}