def METHOD_NAME(self) -> None:
    realm = get_realm("zulip")
    stream = ensure_stream(realm, "zulip features", acting_user=None)
    UserProfile.objects.filter(email__contains="stage").delete()
    starr = do_create_user(
        "1@stage.example.com", "password", realm, "Ada Starr", acting_user=None
    )
    self.set_avatar(starr, "static/images/characters/starr.png")
    fisher = do_create_user(
        "2@stage.example.com", "password", realm, "Bel Fisher", acting_user=None
    )
    self.set_avatar(fisher, "static/images/characters/fisher.png")
    twitter_bot = do_create_user(
        "3@stage.example.com",
        "password",
        realm,
        "Twitter Bot",
        bot_type=UserProfile.DEFAULT_BOT,
        acting_user=None,
    )
    self.set_avatar(twitter_bot, "static/images/features/twitter.png")
    bulk_add_subscriptions(
        realm, [stream], list(UserProfile.objects.filter(realm=realm)), acting_user=None
    )
    staged_messages: List[Dict[str, Any]] = [
        {
            "sender": starr,
            "content": "Hey @**Bel Fisher**, check out Zulip's Markdown formatting! "
            "You can have:\n* bulleted lists\n  * with sub-bullets too\n"
            "* **bold**, *italic*, and ~~strikethrough~~ text\n"
            "* LaTeX for mathematical formulas, both inline -- $$O(n^2)$$ -- and displayed:\n"
            "```math\n\\int_a^b f(t)\\, dt=F(b)-F(a)\n```",
        },
        {
            "sender": fisher,
            "content": "My favorite is the syntax highlighting for code blocks\n"
            "```python\ndef fib(n: int) -> int:\n    # returns the n-th Fibonacci number\n"
            "    return fib(n-1) + fib(n-2)\n```",
        },
        {
            "sender": starr,
            "content": "I think you forgot your base case there, Bel :laughing:\n"
            "```quote\n```python\ndef fib(n: int) -> int:\n    # returns the n-th Fibonacci number\n"
            "    return fib(n-1) + fib(n-2)\n```\n```",
        },
        {
            "sender": fisher,
            "content": "I'm also a big fan of inline link, tweet, video, and image previews. "
            "Check out this picture of Çet Whalin[](/static/images/features/whale.png)!",
        },
        {
            "sender": starr,
            "content": "I just set up a custom linkifier, "
            "so `#1234` becomes [#1234](github.com/zulip/zulip/1234), "
            "a link to the corresponding GitHub issue.",
        },
        {
            "sender": twitter_bot,
            "content": "https://twitter.com/gvanrossum/status/786661035637772288",
        },
        {
            "sender": fisher,
            "content": "Oops, the Twitter bot I set up shouldn't be posting here. Let me go fix that.",
        },
    ]
    messages = [
        internal_prep_stream_message(
            message["sender"],
            stream,
            "message formatting",
            message["content"],
        )
        for message in staged_messages
    ]
    message_ids = do_send_messages(messages)
    preview_message = Message.objects.get(
        id__in=message_ids, content__icontains="image previews"
    )
    whale = get_emoji_data(realm.id, "whale")
    do_add_reaction(starr, preview_message, "whale", whale.emoji_code, whale.reaction_type)
    twitter_message = Message.objects.get(id__in=message_ids, content__icontains="gvanrossum")
    # Setting up a twitter integration in dev is a decent amount of work. If you need
    # to update this tweet, either copy the format below, or send the link to the tweet
    # to chat.zulip.org and ask an admin of that server to get you the rendered_content.
    twitter_message.rendered_content = (
        "<p><a>https://twitter.com/gvanrossum/status/786661035637772288</a></p>\n"
        '<div class="inline-preview-twitter"><div class="twitter-tweet">'
        '<a><img class="twitter-avatar" '
        'src="https://pbs.twimg.com/profile_images/424495004/GuidoAvatar_bigger.jpg"></a>'
        "<p>Great blog post about Zulip's use of mypy: "
        "<a>http://blog.zulip.org/2016/10/13/static-types-in-python-oh-mypy/</a></p>"
        "<span>- Guido van Rossum (@gvanrossum)</span></div></div>"
    )
    twitter_message.save(update_fields=["rendered_content"])
    # Put a short pause between the whale reaction and this, so that the
    # thumbs_up shows up second
    thumbs_up = get_emoji_data(realm.id, "thumbs_up")
    do_add_reaction(
        starr, preview_message, "thumbs_up", thumbs_up.emoji_code, thumbs_up.reaction_type
    )