public async Task <TaxCertificate> CreateCertificateAsync(TaxCertificate cert, Address buyerLocation)
{
var companyID = _settings.CompanyID;
var certificates = await _avaTax.CreateCertificatesAsync(companyID, false, new List <CertificateModel> {
TaxCertificateMapper.Map(cert, buyerLocation, companyID)
});
var pdf = await GetCertificateBase64String(companyID, certificates[0].id ?? 0);
var mappedCertificate = TaxCertificateMapper.Map(certificates[0], pdf);
return(mappedCertificate);
}