public Builder mergeFrom(com.google.webrisk.v1.ThreatDiscovery other) {
      if (other == com.google.webrisk.v1.ThreatDiscovery.getDefaultInstance()) return this;
      if (other.platform_ != 0) {
        setPlatformValue(other.getPlatformValue());
      }
      if (!other.regionCodes_.isEmpty()) {
        if (regionCodes_.isEmpty()) {
          regionCodes_ = other.regionCodes_;
          bitField0_ |= 0x00000002;
        } else {
          ensureRegionCodesIsMutable();
          regionCodes_.addAll(other.regionCodes_);
        }
        onChanged();
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      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