code: def _input_as_multiline_string(self, data):
          
          filename = self._input_filename = \
              FilePath(self.getTmpFilename(self.TmpDir))
          data_file = open(filename, 'w')
          data_file.write(data)
          data_file.close()
          return filename
docs: Write a multiline string to a temp file and return the filename.
  
              data: a multiline string to be written to a file.
  
             * Note: the result will be the filename as a FilePath object
              (which is a string subclass).