code: def deconstruct(self):
          
          name, path, args, kwargs = super(CountryField, self).deconstruct()
          kwargs.pop("choices")
          if self.multiple:  # multiple determines the length of the field
              kwargs["multiple"] = self.multiple
          if self.countries is not countries:
              # Include the countries class if it's not the default countries
              # instance.
              kwargs["countries"] = self.countries.__class__
          return name, path, args, kwargs
docs: Remove choices from deconstructed field, as this is the country list
          and not user editable.
  
          Not including the ``blank_label`` property, as this isn't database
          related.