@Override
  public final void close() {
    stub.close();
  }
Gets the full hashes that match the requested hash prefix. This is used after a hash prefix is
looked up in a threatList and there is a match. The client side threatList only holds partial
hashes so the client must query this method to determine if there is a full hash match of a
threat.

<p>Sample code:

<pre>{@code
// This snippet has been automatically generated and should be regarded as a code template only.
// It will require modifications to work:
// - It may require correct/in-range values for request initialization.
// - It may require specifying regional endpoints when creating the service client as shown in
// https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
try (WebRiskServiceV1Beta1Client webRiskServiceV1Beta1Client =
    WebRiskServiceV1Beta1Client.create()) {
  SearchHashesRequest request =
      SearchHashesRequest.newBuilder()
          .setHashPrefix(ByteString.EMPTY)
          .addAllThreatTypes(new ArrayList<ThreatType>())
          .build();
  ApiFuture<SearchHashesResponse> future =
      webRiskServiceV1Beta1Client.searchHashesCallable().futureCall(request);
  // Do something.
  SearchHashesResponse response = future.get();
}
}</pre>
java-webrisk/google-cloud-webrisk/src/main/java/com/google/cloud/webrisk/v1beta1/WebRiskServiceV1Beta1Client.java