public com.google.protobuf.TimestampOrBuilder getStartTimeOrBuilder() {
          if (startTimeBuilder_ != null) {
            return startTimeBuilder_.getMessageOrBuilder();
          } else {
            return startTime_ == null
                ? com.google.protobuf.Timestamp.getDefaultInstance()
                : startTime_;
          }
        }
<pre>
The start time of the accumulated count.
</pre>

<code>.google.protobuf.Timestamp start_time = 1;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OccupancyCountingPredictionResult.java