def create_new_revision(self, document_relative_path,
new_content, changelist):
r = Revision(self.storage)
r.document_relative_path = document_relative_path
r.datetime_diffed_on = datetime.datetime.now()
# just get the default first value, by passing no object to the scheduler
# (and default is to use today() as start date)
r.scheduled_date = self.scheduler_getter(r.document_relative_path).get_next_date(None)
# no revisions done _for this diff_, not the document, by the way
r.num_revisions_done = 0
r.content = new_content
r.changelist = changelist
r.perform_insert()
