model_access not listed in hdbrole

I was trying to Creating an SAP HANA XS Application using the following document SAP HANA Cloud Platform

I was successfully able to execute call

"HCP"."HCP_GRANT_ROLE_TO_USER"('p1940811895trial.dev.myhanaXS::model_access','P1940811895').

I was trying to grant roles for P1940811895 but was not able to find model_access role .I've followed and completed all the steps successfully currently stuck here.