@java.lang.Override
  public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
    if (platform_
        != com.google.webrisk.v1.ThreatDiscovery.Platform.PLATFORM_UNSPECIFIED.getNumber()) {
      output.writeEnum(1, platform_);
    }
    for (int i = 0; i < regionCodes_.size(); i++) {
      com.google.protobuf.GeneratedMessageV3.writeString(output, 2, regionCodes_.getRaw(i));
    }
    getUnknownFields().writeTo(output);
  }
<pre>
CLDR region code of the countries/regions the URI poses a threat ordered
from most impact to least impact. Example: "US" for United States.
</pre>

<code>repeated string region_codes = 2;</code>

@param index The index of the value to return.
@return The bytes of the regionCodes at the given index.
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/ThreatDiscovery.java