code: def open_submission_page(self, url=None, submission=None):
          
          from .submission_page import SubmissionPage
  
          with self.term.loader('Loading submission'):
              page = SubmissionPage(self.reddit, self.term, self.config,
                                    self.oauth, url=url, submission=submission)
          if not self.term.loader.exception:
              return page
docs: Open an instance of the submission page for the given submission URL.