@Override
  public List<PartialPath> getPaths() {
    List<PartialPath> ret = new ArrayList<>();
    for (String m : measurementList) {
      PartialPath fullPath = device.concatAsMeasurementPath(m);
      ret.add(fullPath);
    }
    return ret;
  }
this class extends {@code Statement} and process insert statement.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/statement/crud/InsertStatement.java