[keycloak-user] Keycloak adapter with another OpenID Provider

Hello, I'm trying to use OIDC with some applications on JBoss, and I have seen that I can use a Keycloak adapter. But it's not clear for me if this adapter can be used as a Resource Provider, and can be connected to another OpenID Provider than Keycloak; or if the adapter is used to delegate the Resource Provider function to Keycloak. In fact we have already a OpenID Provider, and we want to know if we can use it with a Keycloak adapter. Thank in advance for your help! Adrien