<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create_account(self, short_name, author_name=None, author_url=None, replace_token=True):
 """ Create a new Telegraph account :param short_name: Account name, helps users with several accounts remember which they are currently using. Displayed to the user above the "Edit/Publish" button on Telegra.ph, other users don't see this name :param author_name: Default author name used when creating new articles :param author_url: Default profile link, opened when users click on the author's name below the title. Can be any link, not necessarily to a Telegram profile or channels :param replace_token: Replaces current token to a new user's token """


        response = self._telegraph.method('createAccount', values={
            'short_name': short_name,
            'author_name': author_name,
            'author_url': author_url
        })

        if replace_token:
            self._telegraph.access_token = response.get('access_token')

        return response