Optional<? extends TenantAdminApi> tennantAdminApiList =
keystoneApi.getTenantAdminApi();
if (tennantAdminApiList.isPresent()){
     System.out.println("tennantAdminApi is present");
    TenantAdminApi tennantAdminApi = tennantAdminApiList.get();
     CreateTenantOptions tenantOptions =
CreateTenantOptions.Builder.enabled(false);
     tennantAdminApi.create(name);
}else{
    System.out.println("tennantAdminApi not present");
}