@Override
  public String getTimestampPrecision() throws TException {
    return defaultSessionConnection.getClient().getProperties().getTimestampPrecision();
  }
insert data in one row, if you want to improve your performance, please use insertRecords
method or insertTablet method

@see Session#insertRecords(List, List, List, List, List)
@see Session#insertTablet(Tablet)
iotdb-client/session/src/main/java/org/apache/iotdb/session/Session.java