import org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;
import org.bouncycastle.pkcs.PKCS10CertificationRequest;
import org.bouncycastle.pkcs.jcajce.JcaPKCS10CertificationRequestBuilder;
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import org.onap.aaf.certservice.client.certification.exception.CsrGenerationException;
import org.onap.aaf.certservice.client.configuration.model.CsrConfiguration;
import org.slf4j.Logger;