code: public static void addSubPartition(SqlgGraph sqlgGraph, Partition partition) {
          AbstractLabel abstractLabel = partition.getAbstractLabel();
          addSubPartition(
                  sqlgGraph,
                  partition.getParentPartition().getParentPartition() != null,
                  abstractLabel instanceof VertexLabel,
                  abstractLabel.getSchema().getName(),
                  abstractLabel.getName(),
                  partition.getParentPartition().getName(),
                  partition.getName(),
                  partition.getPartitionType(),
                  partition.getPartitionExpression(),
                  partition.getFrom(),
                  partition.getTo(),
                  partition.getIn()
          );
  
      }
docs: Adds the partition to a partition. A new Vertex with label Partition is added and in linked to its parent with
  the SQLG_SCHEMA_PARTITION_PARTITION_EDGE edge label.
  
  @param sqlgGraph