Return dictionary with values of subsettings.

        Returns:
            dict: values of subsettings.

def get_value(self):
        """
        Return dictionary with values of subsettings.

        Returns:
            dict: values of subsettings.
        """
        try:
            self.raw_value
        except (AttributeError, KeyError) as err:
            self._reraise_if_required(err)
            default_value = self.default_value
            if self.transform_default:
                return self.transform(default_value)
            return default_value
        else:
            # If setting is defined, load values of all subsettings.
            value = {}
            for key, subsetting in self.settings.items():
                value[key] = subsetting.get_value()
            return value