docs: def classify(self, text=u''):
          """ Predicts the Language of a given text.
  
              :param text: Unicode text to be classified.
          """
  
          text = self.lm.normalize(text)
          tokenz = LM.tokenize(text, mode='c')
          result = self.lm.calculate(doc_terms=tokenz)
          #print 'Karbasa:', self.karbasa(result)
          if self.unk and self.lm.karbasa(result) < self.min_karbasa:
              lang = 'unk'
          else:
              lang = result['calc_id']
          return lang