public Builder setNegativeExpireTime(com.google.protobuf.Timestamp value) {
      if (negativeExpireTimeBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        negativeExpireTime_ = value;
      } else {
        negativeExpireTimeBuilder_.setMessage(value);
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
For requested entities that did not match the threat list, how long to
cache the response until.
</pre>

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