private void ensureActiveZoneCountsIsMutable() {
        if (!((bitField0_ & 0x00000004) != 0)) {
          activeZoneCounts_ =
              new java.util.ArrayList<
                  com.google.cloud.visionai.v1.OccupancyCountingPredictionResult.Stats
                      .ActiveZoneCount>(activeZoneCounts_);
          bitField0_ |= 0x00000004;
        }
      }
<pre>
Crossing line counts.
</pre>

<code>
repeated .google.cloud.visionai.v1.OccupancyCountingPredictionResult.Stats.CrossingLineCount crossing_line_counts = 2;
</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/OccupancyCountingPredictionResult.java