@Override
    public void setIamCredentials(AWSCredentialsProvider iamCredentials) {
        super.setIamCredentials(iamCredentials);
    }
Specify an implementation of {@link AWSCredentialsProvider} to be used when signing IAM auth'd requests

@param iamCredentials
       the credential provider
frontend-service-client/src/main/java/com/amazonaws/blox/BloxClientBuilder.java