private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.visionai.v1.Partition.SpatialPartition,
            com.google.cloud.visionai.v1.Partition.SpatialPartition.Builder,
            com.google.cloud.visionai.v1.Partition.SpatialPartitionOrBuilder>
        getSpatialPartitionFieldBuilder() {
      if (spatialPartitionBuilder_ == null) {
        spatialPartitionBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.visionai.v1.Partition.SpatialPartition,
                com.google.cloud.visionai.v1.Partition.SpatialPartition.Builder,
                com.google.cloud.visionai.v1.Partition.SpatialPartitionOrBuilder>(
                getSpatialPartition(), getParentForChildren(), isClean());
        spatialPartition_ = null;
      }
      return spatialPartitionBuilder_;
    }
<pre>
Partition of asset in space.
</pre>

<code>.google.cloud.visionai.v1.Partition.SpatialPartition spatial_partition = 2;</code>
java-visionai/proto-google-cloud-visionai-v1/src/main/java/com/google/cloud/visionai/v1/Partition.java