public Map<String, List<TSeriesPartitionSlot>> getPartitionSlotsMap() {
    return partitionSlotsMap;
  }
Get or create SchemaPartition by the specific partitionSlotsMap.
iotdb-core/confignode/src/main/java/org/apache/iotdb/confignode/consensus/request/read/partition/GetSchemaPartitionPlan.java