'Visit page and make HAR file.'

def _make_har_file(self, page):

    har_name = '{page}_{course}'.format(page=type(page).__name__, course=self.course_info['number'])
    self.har_capturer.add_page(self.browser, har_name)
    page.visit()
    self.har_capturer.save_har(self.browser, har_name)
