I was trying to setup Keycloak to use SAML and configure an external IDP in the admin console of Keycloak. 
I had a couple of questions : 

1. What is the keycloak API we need to hit to access the landing page for the external IDP? 
2. I was trying to call the /realm/{realm-name}/broker/{provider-id}/login API

The problem that I was facing when I used the above API was that it expects "code" as the Query parameter and I did not find any example on how to generate that code.

Any help would be appreciated. 

Thanks,
Robin