4.
I cannot find these in code, but some of the elements of .. toctree:: in doc\source\api_reference.rst - lines 44-66 - do not have any titles (the fact that some of the others have them non-descriptive or non-helpful is another matter entirely).
    api/internal/utils                      - b2sdk.utils
    api/internal/cache                      - b2sdk.cache
    api/internal/sync/action                - b2sdk.sync.action
    api/internal/sync/exception             - b2sdk.sync.exception
    api/internal/sync/file                  - b2sdk.sync.file
    api/internal/sync/folder                - b2sdk.sync.folder
    api/internal/sync/folder_parser         - b2sdk.sync.folder_parser
    api/internal/sync/policy                - b2sdk.sync.policy
    api/internal/sync/policy_manager        - b2sdk.sync.policy_manager
    api/internal/sync/scan_policies         - b2sdk.sync.scan_policies
    api/internal/sync/sync                  - b2sdk.sync.sync
    api/internal/transferer/file_metadata   - b2sdk.transferer.file_metadata
    api/internal/upload_source              - b2sdk.upload_source


5.
Dicts get squashed and much less convenient to read/copy from. E.g.:
b2sdk\account_info\abstract.py, lines 33-37:
"""
    REALM_URLS = {
        'production': 'https://api.backblazeb2.com',
        'dev': 'http://api.backblazeb2.xyz:8180',
        'staging': 'https://api.backblaze.net',
    }
"""

while in the docs it looks like this:
"""
REALM_URLS = {'dev': 'http://api.backblazeb2.xyz:8180', 'production': 'https://api.backblazeb2.com', 'staging':
'https://api.backblaze.net'}
"""
