Be clear which functions are intended to be called externally and which aren't

Internal ones should be marked private (_)

External ones should have docs.

Current situation, what is used:

https://github.com/Open-Telecoms-Data/lib-cove-ofds/

• get_additional_fields_info
• fields_present_generator
• schema_dict_fields_generator

https://github.com/openownership/lib-cove-bods

• get_additional_fields_info
• get_orgids_prefixes
• schema_dict_fields_generator
• but be aware work is happening on this

https://github.com/GFDRR/rdls-lib-cove

• get_orgids_prefixes
• get_additional_fields_info
• schema_dict_fields_generator