in src/main/java/com/epam/digital/data/platform/integration/idm/service/KeycloakIdmService.java [181:186]
private void performOperationForRoles(String username, List<RoleRepresentation> roles,
BiConsumer<RoleScopeResource, List<RoleRepresentation>> operation) {
var realmResource = client.getRealmResource();
var roleScopeResource = getRoleScopeResource(realmResource, username);
operation.accept(roleScopeResource, roles);
}