<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_user_info(self):
 """ Returns the document representing the currently logged in user on the server """

        try:
            user_id = "org.couchdb.user:"+self.resource.credentials[0]
        except TypeError:
            raise RuntimeError(
                "Please log in before trying to access your user's info"
            )
        status, _, body = self["_users"].resource.get_json(user_id)
        if status != 200:
            raise RuntimeError(
                "Failed to get user info"
            )
        return body