@Override
      public IDeviceSchemaInfo next() {
        if (!hasNext()) {
          throw new NoSuchElementException();
        }
        final IDeviceSchemaInfo result = next;
        next = null;
        return result;
      }
Get node by the path

@return last node in given seriesPath
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/schemaengine/schemaregion/mtree/impl/mem/MTreeBelowSGMemoryImpl.java