Method to delete the given stage_name.  If the current deployment tied to the given
        stage_name has no other stages associated with it, the deployment will be removed
        as well

def delete_stage(self, ret):
        '''
        Method to delete the given stage_name.  If the current deployment tied to the given
        stage_name has no other stages associated with it, the deployment will be removed
        as well
        '''
        deploymentId = self._get_current_deployment_id()
        if deploymentId:
            result = __salt__['boto_apigateway.delete_api_stage'](restApiId=self.restApiId,
                                                                  stageName=self._stage_name,
                                                                  **self._common_aws_args)
            if not result.get('deleted'):
                ret['abort'] = True
                ret['result'] = False
                ret['comment'] = 'delete_stage delete_api_stage, {0}'.format(result.get('error'))
            else:
                # check if it is safe to delete the deployment as well.
                if not self._one_or_more_stages_remain(deploymentId):
                    result = __salt__['boto_apigateway.delete_api_deployment'](restApiId=self.restApiId,
                                                                               deploymentId=deploymentId,
                                                                               **self._common_aws_args)
                    if not result.get('deleted'):
                        ret['abort'] = True
                        ret['result'] = False
                        ret['comment'] = 'delete_stage delete_api_deployment, {0}'.format(result.get('error'))
                else:
                    ret['comment'] = 'stage {0} has been deleted.\n'.format(self._stage_name)
        else:
            # no matching stage_name/deployment found
            ret['comment'] = 'stage {0} does not exist'.format(self._stage_name)

        return ret