Do record_manager.get_time() function not implement yet

[kientv]

File "/home/chat-langchain/_index.py", line 103, in index index_start_dt = record_manager.get_time() ^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/chat-langchain/venv/lib/python3.11/site-packages/langchain/indexes/_sql_record_manager.py", line 205, in get_time raise NotImplementedError(f"Not implemented for dialect {self.dialect}") NotImplementedError: Not implemented for dialect mysql

File "/home/chat-langchain/_index.py", line 158, in index record_manager.update( File "/home/chat-langchain/venv/lib/python3.11/site-packages/langchain/indexes/_sql_record_manager.py", line 269, in update update_time = self.get_time() ^^^^^^^^^^^^^^^