code: def generateSequence(self, text, preprocess=False):
      
      # TODO: enable text preprocessing; abstract out the logic in split() into a common method.
      tokens = TextPreprocess().tokenize(text)
      cat = [-1]
      self.sequenceCount += 1
      uniqueID = "q"
      data = self._formatSequence(tokens, cat, self.sequenceCount-1, uniqueID)
  
      return data
docs: Return a list of lists representing the text sequence in network data 
      format. Does not preprocess the text.