public Builder mergeThreatDiscovery(com.google.webrisk.v1.ThreatDiscovery value) {
      if (threatDiscoveryBuilder_ == null) {
        if (((bitField0_ & 0x00000008) != 0)
            && threatDiscovery_ != null
            && threatDiscovery_ != com.google.webrisk.v1.ThreatDiscovery.getDefaultInstance()) {
          getThreatDiscoveryBuilder().mergeFrom(value);
        } else {
          threatDiscovery_ = value;
        }
      } else {
        threatDiscoveryBuilder_.mergeFrom(value);
      }
      if (threatDiscovery_ != null) {
        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