public Certificate withCertificateIdentifier(String certificateIdentifier) {
        setCertificateIdentifier(certificateIdentifier);
        return this;
    }
<p>
The unique key that identifies a certificate.
</p>
<p>
Example: <code>rds-ca-2019</code>
</p>

@param certificateIdentifier
       The unique key that identifies a certificate.</p>
       <p>
       Example: <code>rds-ca-2019</code>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-docdb/src/main/java/com/amazonaws/services/docdb/model/Certificate.java