code: def unique_lorem(self, field=None, val=None):
          
          lorem_text = self.lorem(field, val)
          max_length = getattr(field, 'max_length', None)
  
          suffix_str = str(self.unique_suffixes[field])
          unique_text = lorem_text + suffix_str
          if max_length is not None:
              # take the last max_length chars
              unique_text = unique_text[-max_length:]
          self.unique_suffixes[field] += 1
          return unique_text
docs: Returns lorem ipsum text guaranteed to be unique. First uses lorem function
          then adds a unique integer suffix.