private com.google.protobuf.SingleFieldBuilderV3<
            com.google.webrisk.v1.ThreatDiscovery,
            com.google.webrisk.v1.ThreatDiscovery.Builder,
            com.google.webrisk.v1.ThreatDiscoveryOrBuilder>
        getThreatDiscoveryFieldBuilder() {
      if (threatDiscoveryBuilder_ == null) {
        threatDiscoveryBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.webrisk.v1.ThreatDiscovery,
                com.google.webrisk.v1.ThreatDiscovery.Builder,
                com.google.webrisk.v1.ThreatDiscoveryOrBuilder>(
                getThreatDiscovery(), getParentForChildren(), isClean());
        threatDiscovery_ = null;
      }
      return threatDiscoveryBuilder_;
    }
<pre>
Provides additional information about how the submission was discovered.
</pre>

<code>.google.cloud.webrisk.v1.ThreatDiscovery threat_discovery = 4;</code>
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/SubmitUriRequest.java