public async Task RegisterThing(string thingName, string thingType)
{
var createThingGroupRequest = new CreateThingRequest()
{
ThingName = thingName,
ThingTypeName = thingType
};
var createThingResponse = await _client.CreateThingAsync(createThingGroupRequest);
var certificate = await CreateCertificate();
await _certificateStore.StoreCertificate(certificate.CertificateId, certificate.CertificatePem);
await AttachThingToCertificate(createThingResponse.ThingName, certificate.CertificateArn);
await CreatePolicy(thingType);
await AttachPolicyToCertificate(thingType, certificate.CertificateArn);
}