Changes
/* Studio */
You will need to load the correct certificate from your SAML Identity Provider instead of null. It's recommended to save the certificate on the server and load it from file storage. The certificate must be the one the IdP uses to sign its SAML responses with.
There are several use-cases where we need to customize the SSO processor. We can define what should be done when a login object is required or found, and we can use the information delivered with the SSO token in the form of assertions or claims. In any case, we must override the SSO processor implementation, e.g.: