parameters: (self, reason)
docstring: Sets a failure reason.
  
      Causes Failed() to return true on the client side.  "reason" will be
      incorporated into the message returned by ErrorText().  If you find
      you need to return machine-readable information about failures, you
      should incorporate it into your response protocol buffer and should
      NOT call SetFailed().
docstring_summary: Sets a failure reason.
docstring_tokens: Sets a failure reason .
function: def SetFailed(self, reason):
      """Sets a failure reason.
  
      Causes Failed() to return true on the client side.  "reason" will be
      incorporated into the message returned by ErrorText().  If you find
      you need to return machine-readable information about failures, you
      should incorporate it into your response protocol buffer and should
      NOT call SetFailed().
      """
      raise NotImplementedError
function_tokens: def SetFailed ( self , reason ) : raise NotImplementedError