Getting properties from keycloak.properties

Hey
we just started using keycloak x quarkus distribution, and we have made a user storage and user federation spi.
our problem is that we are unable to get any property from keycloak.properties which suppose to act just like application.properties
i have some custom properties that are not linked to any dependance and i am using them to configure the spi.

so how can i do that in keyckloak X ? shouldn’t it be just like quarkus?