docs: def create_thread(cls, session, conversation, thread, imported=False):
          """Create a conversation thread.
  
          Please note that threads cannot be added to conversations with 100
          threads (or more), if attempted the API will respond with HTTP 412.
  
          Args:
              conversation (helpscout.models.Conversation): The conversation
               that the thread is being added to.
              session (requests.sessions.Session): Authenticated session.
              thread (helpscout.models.Thread): The thread to be created.
              imported (bool, optional): The ``imported`` request parameter
               enables conversations to be created for historical purposes (i.e.
               if moving from a different platform, you can import your
               history). When ``imported`` is set to ``True``, no outgoing
               emails or notifications will be generated.
  
          Returns:
              helpscout.models.Conversation: Conversation including newly created
                  thread.
          """
          return super(Conversations, cls).create(
              session,
              thread,
              endpoint_override='/conversations/%s.json' % conversation.id,
              imported=imported,
          )