docs: static ImmutableList<Source> listSources(OrganizationName organizationName) {
      try (SecurityCenterClient client = SecurityCenterClient.create()) {
        // Start setting up a request to list sources in an organization.
        // OrganizationName organizationName = OrganizationName.of(/*organizationId=*/"123234324");
        ListSourcesRequest.Builder request =
            ListSourcesRequest.newBuilder().setParent(organizationName.toString());
  
        // Call the API.
        ListSourcesPagedResponse response = client.listSources(request.build());
  
        // This creates one list for all sources.  If your organization has a large number of sources
        // this can cause out of memory issues.  You can process them batches by returning
        // the Iterable returned response.iterateAll() directly.
        ImmutableList<Source> results = ImmutableList.copyOf(response.iterateAll());
        System.out.println("Sources:");
        System.out.println(results);
        return results;
      } catch (IOException e) {
        throw new RuntimeException("Couldn't create client.", e);
      }
    }