public Builder setExpirationTime(com.google.protobuf.Timestamp.Builder builderForValue) {
      if (expirationTimeBuilder_ == null) {
        expirationTime_ = builderForValue.build();
      } else {
        expirationTimeBuilder_.setMessage(builderForValue.build());
      }
      bitField0_ |= 0x00000002;
      onChanged();
      return this;
    }
<pre>
The expiration time of the token.
</pre>

<code>.google.protobuf.Timestamp expiration_time = 2;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/GenerateStreamHlsTokenResponse.java