docs: def get_argument(self, name, default=None, strip=True):
          """
          Returns the value of the argument with the given name.
  
          If default is not provided, returns ``None``
  
          If the argument appears in the url more than once, we return the last value.
  
          The returned value is always unicode
          """
          return self._get_argument(name, default, self.request.arguments, strip)[name]