public DescribedCertificate withSerial(String serial) {
        setSerial(serial);
        return this;
    }
<p>
The serial number for the certificate.
</p>

@param serial
       The serial number for the certificate.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-transfer/src/main/java/com/amazonaws/services/transfer/model/DescribedCertificate.java