public com.google.protobuf.TimestampOrBuilder getExpireTimeOrBuilder() {
        if (expireTimeBuilder_ != null) {
          return expireTimeBuilder_.getMessageOrBuilder();
        } else {
          return expireTime_ == null
              ? com.google.protobuf.Timestamp.getDefaultInstance()
              : expireTime_;
        }
      }
<pre>
The cache lifetime for the returned match. Clients must not cache this
response past this timestamp to avoid false positives.
</pre>

<code>.google.protobuf.Timestamp expire_time = 2;</code>
java-webrisk/proto-google-cloud-webrisk-v1/src/main/java/com/google/webrisk/v1/SearchUrisResponse.java