in src/main/java/com/epam/digital/data/platform/integration/idm/client/KeycloakAdminClient.java [189:194]
public void addRoles(RoleScopeResource roleScopeResource, List<RoleRepresentation> roles) {
log.info("Adding roles {} to user", roles);
wrapKeycloakVoidRequest(() -> roleScopeResource.add(roles),
() -> String.format("Couldn't add roles %s to user", roles));
log.info("Roles {} added to user", roles);
}