public static com.google.webrisk.v1.SearchHashesResponse getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
For requested entities that did not match the threat list, how long to
cache the response until.
</pre>

<code>.google.protobuf.Timestamp negative_expire_time = 2;</code>
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/SearchHashesResponse.java