public void setKeyIdentifier(String keyIdentifier) {
        this.keyIdentifier = keyIdentifier;
    }
<p>
The <code>keyARN</code> of the MAC generation encryption key.
</p>

@param keyIdentifier
       The <code>keyARN</code> of the MAC generation encryption key.
aws-java-sdk-paymentcryptographydata/src/main/java/com/amazonaws/services/paymentcryptographydata/model/GenerateMacRequest.java