Non-serializable service references

Hi, we recently started using the Cloud Manager pipelines to run analysis on our code and one of the critical code smells that keep popping up is the following:

In this case "cryptoSupport" refers to an injected service that implements the com.adobe.granite.crypto.CryptoSupport interface.

@3214626
private CryptoSupport cryptoSupport;

My question is: Since we can't make CryptoSupport serializable, is it safe to declare the field as transient? Is there any danger of our servlet (that contains the above service reference) being flushed to disk at some point and failing to restore the service reference later?

Thank you,

William.