Hello Krish,
I have used the same and for me its working fine.
import com.sap.odp.api.ibean.IBeanHomeLocator;
import com.sap.odp.api.doc.collaboration.CollaboratorRoleIBeanHomeIfc;
import com.sap.odp.api.common.log.Logger;
import com.sap.odp.api.common.exception.*;
collaboratorRoleHome=IBeanHomeLocator.lookup(session,CollaboratorRoleIBeanHomeIfc.sHOME_NAME);
collaboratorRoleBean = collaboratorRoleHome.findUniqueByName("Collaborator");
collaboratorRoleRef = collaboratorRoleBean.getObjectReference();
logMessage("collaboratorRoleHome is: "+collaboratorRoleHome+ " collaboratorRoleBean is : " +collaboratorRoleBean+ " collaboratorRoleRef is : " +collaboratorRoleRef, 0);
See the logs screen below
Regards,
Raj