private com.google.protobuf.SingleFieldBuilderV3<
            com.google.protobuf.Timestamp,
            com.google.protobuf.Timestamp.Builder,
            com.google.protobuf.TimestampOrBuilder>
        getLastEstablishTimeFieldBuilder() {
      if (lastEstablishTimeBuilder_ == null) {
        lastEstablishTimeBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.protobuf.Timestamp,
                com.google.protobuf.Timestamp.Builder,
                com.google.protobuf.TimestampOrBuilder>(
                getLastEstablishTime(), getParentForChildren(), isClean());
        lastEstablishTime_ = null;
      }
      return lastEstablishTimeBuilder_;
    }
<pre>
The time that the current input stream is accepted and the connection is
established.
</pre>

<code>.google.protobuf.Timestamp last_establish_time = 1;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/InputStreamProperty.java