code: def get_time_to_merge_request_response(self, item):
          
          review_dates = [str_to_datetime(review['created_at']) for review in item['review_comments_data']
                          if item['user']['login'] != review['user']['login']]
          if review_dates:
              return min(review_dates)
          return None
docs: Get the first date at which a review was made on the PR by someone
          other than the user who created the PR