code: def create(cls, **kwargs):
          
          extra_columns = set(kwargs.keys()) - set(cls._columns.keys())
          if extra_columns:
              raise ValidationError("Incorrect columns passed: {0}".format(extra_columns))
          return cls.objects.create(**kwargs)
docs: Create an instance of this model in the database.
  
          Takes the model column values as keyword arguments. Setting a value to
          `None` is equivalent to running a CQL `DELETE` on that column.
  
          Returns the instance.