public Builder setThreatDiscovery(com.google.webrisk.v1.ThreatDiscovery value) {
      if (threatDiscoveryBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        threatDiscovery_ = value;
      } else {
        threatDiscoveryBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000008;
      onChanged();
      return this;
    }
<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