code: def as_wfn(self):
          r
  
          result = []
  
          for s in self._standard_value:
              result.append(s)
              result.append(CPEComponent1_1._ESCAPE_SEPARATOR)
  
          return "".join(result[0:-1])
docs: r"""
          Returns the value of compoment encoded as Well-Formed Name (WFN)
          string.
  
          :returns: WFN string
          :rtype: string
  
          TEST:
  
          >>> val = 'xp!vista'
          >>> comp1 = CPEComponent1_1(val, CPEComponentSimple.ATT_VERSION)
          >>> comp1.as_wfn()
          'xp\\!vista'