public static Set<INodeSchemaInfo> getChildNodePathInNextLevel(
      ISchemaRegion schemaRegion, PartialPath pathPattern) {
    Set<INodeSchemaInfo> result = new HashSet<>();
    try (ISchemaReader<INodeSchemaInfo> nodeReader =
        schemaRegion.getNodeReader(
            SchemaRegionReadPlanFactory.getShowNodesPlan(
                pathPattern.concatNode(ONE_LEVEL_PATH_WILDCARD), ALL_MATCH_SCOPE))) {
      while (nodeReader.hasNext()) {
        result.add(nodeReader.next());
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
    return result;
  }
Create time series quickly using createSimpleTimeSeriesInt64 with given string list of paths.

@param schemaRegion schemaRegion which you want to create time series
@param pathList
iotdb-core/datanode/src/test/java/org/apache/iotdb/db/metadata/schemaRegion/SchemaRegionTestUtil.java