1. Upload a csv with data like 

   shortname,fullname,category_idnumber,enrolment_1,enrolment_1_password

   C1,Course 1,CAT1,self,testtest

1. It should created a new course with self enrolment method enabled and The course enrolment key for method should be set as per https://docs.moodle.org/403/en/Upload_courses

Actual: Method is created with empty password

problem is that it creates a default instance: 

// Create a new instance if necessary.

if (empty($instance) && $plugin->can_add_instance($course->id)) {

    $error = $plugin->validate_plugin_data_context($method, $course->id);

    if ($error) {

        $this->error('contextnotallowed', $error);

        break;

    }

    $instanceid = $plugin->add_default_instance($course); 

And then it doesn't update it with provided password - there is a place in code where it does it for startdate, enddate, enrolperiod etc so we need to add password handling there as well