This method was created without having a need for it. It's only called by get_conversation_between_users() in the singular form, and in some unit tests and is not easy to read / maintain.

Considering the above two methods, what we want is as follows:

• Remove get_individual_conversations_between_users() [deprecate sadly, as it's public]
• Rewrite get_conversation_between_users() to just make a DB call based on the type and conversation hash.
• Adjust unit tests to use the rewritten method.