docs: def strip(self):
          '''FIXME:
          '''
          if len(self._content) == 0:
              return self
          elif len(self._content) == 1:
              return self.__class__(self._content[0].strip())
          else:
              first_component = self._content[0]
              last_component = self._content[-1]
              total = (
                  (first_component.lstrip(),) +
                  self._content[1:-1] +
                  (last_component.rstrip(),))
              return self.__class__(total)