SAML IDP for Tenable/Security Center

My apologies for the newbie SAML question. My team has successfully configured our F5 as a SAML IDP for AWS, and we started to look at other potential apps we could use in the same way. We use Tenable Security Center/Nessus for vulnerability scanning and I noticed that the Security Center console allows for SAML authentication. In further research, it seems to me that F5 has a hard list of SaaS apps that they have SAML endpoints for, and Tenable is not on the list. I am wondering if there is a way to implement this connection or if I'm already sunk at the outset. Has anyone gone this direction before?