eventespresso / event-espresso-core

            $obj = $this->instantiate_batch_job_handler_from_classname($batch_job_handler_class);

            $this->_job_parameters = new JobParameters($this->_job_id, $batch_job_handler_class, $request_data);

            $response = $obj->create_job($this->_job_parameters);

            if (! $response instanceof JobStepResponse) {

                throw new BatchRequestException(

                    sprintf(

                        __(

                            'The class implementing JobHandlerInterface did not return a JobStepResponse when create_job was called with %1$s. It needs to return one or throw an Exception',

                            'event_espresso'

                        ),

                        wp_json_encode($request_data)

                    )

                );

            }

                );

            }

            $success = $this->_job_parameters->save(true);

            if (! $success) {

                throw new BatchRequestException(

                    sprintf(

                        __(

                            'Could not save job %1$s to the Wordpress Options table. These were the arguments used: %2$s',

                            'event_espresso'

                        ),

                        $this->_job_id,

                        wp_json_encode($request_data)

                    )

                );

            }

            $handler_obj = $this->instantiate_batch_job_handler_from_classname($this->_job_parameters->classname());

            // continue it

            $response = $handler_obj->continue_job($this->_job_parameters, $batch_size);

            if (! $response instanceof JobStepResponse) {

                throw new BatchRequestException(

                    sprintf(

                        __(

                            'The class implementing JobHandlerInterface did not return a JobStepResponse when continue_job was called with job %1$s. It needs to return one or throw an Exception',

                            'event_espresso'

                        ),

                        $this->_job_id

                    )

                );

            }

            $handler_obj = $this->instantiate_batch_job_handler_from_classname($job_parameters->classname());

            // continue it

            $response = $handler_obj->cleanup_job($job_parameters);

            if (! $response instanceof JobStepResponse) {

                throw new BatchRequestException(

                    sprintf(

                        __(

                            'The class implementing JobHandlerInterface did not return a JobStepResponse when cleanup_job was called with job %1$s. It needs to return one or throw an Exception',

                            'event_espresso'

                        ),

                        $this->_job_id

                    )

                );

            }