private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.OccupancyCountConfig,
            com.google.cloud.visionai.v1.OccupancyCountConfig.Builder,
            com.google.cloud.visionai.v1.OccupancyCountConfigOrBuilder>
        getOccupancyCountConfigFieldBuilder() {
      if (occupancyCountConfigBuilder_ == null) {
        if (!(processorConfigCase_ == 12)) {
          processorConfig_ = com.google.cloud.visionai.v1.OccupancyCountConfig.getDefaultInstance();
        }
        occupancyCountConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.OccupancyCountConfig,
                com.google.cloud.visionai.v1.OccupancyCountConfig.Builder,
                com.google.cloud.visionai.v1.OccupancyCountConfigOrBuilder>(
                (com.google.cloud.visionai.v1.OccupancyCountConfig) processorConfig_,
                getParentForChildren(),
                isClean());
        processorConfig_ = null;
      }
      processorConfigCase_ = 12;
      onChanged();
      return occupancyCountConfigBuilder_;
    }
<pre>
Configs of occupancy count processor.
</pre>

<code>.google.cloud.visionai.v1.OccupancyCountConfig occupancy_count_config = 12;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/ProcessorConfig.java