private void ensureNegativeDirectionCountsIsMutable() {
          if (!((bitField0_ & 0x00000004) != 0)) {
            negativeDirectionCounts_ =
                new java.util.ArrayList<
                    com.google.cloud.visionai.v1.OccupancyCountingPredictionResult.Stats
                        .ObjectCount>(negativeDirectionCounts_);
            bitField0_ |= 0x00000004;
          }
        }
<pre>
The direction that follows the right hand rule.
</pre>

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