Creates Telegraph account

        :param short_name: Required. 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.
        :type short_name: str

        :param author_name: Optional. Default author name used when creating new articles.
        :type author_name: str

        :param author_url: Optional. 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 channel.
        :type author_url: str

        :returns: Account object with the regular fields and an additional access_token field.

def createAccount(self, short_name, author_name=None, author_url=None):
        """Creates Telegraph account

        :param short_name: Required. 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.
        :type short_name: str

        :param author_name: Optional. Default author name used when creating new articles.
        :type author_name: str

        :param author_url: Optional. 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 channel.
        :type author_url: str

        :returns: Account object with the regular fields and an additional access_token field.
        """
        r = self.make_method("createAccount", {
            "short_name": short_name,
            "author_name": author_name,
            "author_url": author_url
        })
        self.access_token = r['access_token']
        return r