It appears as though helper_types is not included in the types file in the v0.5.4 tag, but exists in main #358
Description
Oh, it looks like `helper_types` is not included in the types file:
cannot import name 'helper_types' from 'google.generativeai.types' (/opt/venv/lib/python3.10/site-packages/google/generativeai/types/__init__.py)
Originally posted by @homer6 in #335 (comment)