@java.lang.Override
    public Builder clear() {
      super.clear();
      bitField0_ = 0;
      platform_ = 0;
      regionCodes_ = com.google.protobuf.LazyStringArrayList.emptyList();
      return this;
    }
<pre>
Details about how the threat was discovered.
</pre>

Protobuf type {@code google.cloud.webrisk.v1.ThreatDiscovery}
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ThreatDiscovery.java