The friendly name is mapped to Facebook's first name. If the first
        name is missing, use the last name.

async def get_friendly_name(self) -> Text:
        """
        The friendly name is mapped to Facebook's first name. If the first
        name is missing, use the last name.
        """
        u = await self._get_user()
        f = u.get('first_name', '').strip()
        l = u.get('last_name', '').strip()

        return f or l