@Override
  public long getMinTime() {
    return getTime();
  }
Make sure the dataTypes and values have been created before calling this.

@param buffer - ByteBuffer
@throws UnSupportedDataTypeException - If meets unsupported data type.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/planner/plan/node/write/InsertRowNode.java