Context Navigation

Changes between Initial Version and Version 1 of Ticket #32418

-              initial
+              v1
 My code:
+```python
+{{{
 duration_expression = ExpressionWrapper(
     datetime.timedelta(minutes=1) * F('duration'),
 …
     Q(Q(booking_end__lte=first_interval),
       Q(booking_end__gte=next_interval)))
+```
+}}}
 Error I get:
+```
+{{{
 (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '* `carwashes_carwashbooking`.`duration`) MICROSECOND) AS `booking_end` FROM `car' at line 1")
+```
+}}}
 SQL query:
+```sql
+{{{
 ('SELECT `carwashes_carwashbooking`.`id`, '
  '`carwashes_carwashbooking`.`carwash_id`, '
 …
  'MICROSECOND * `carwashes_carwashbooking`.`duration`) MICROSECOND) >= %s))) '
  'LIMIT 21')
+```
+}}}
 Stackoverflow issue: https://stackoverflow.com/questions/66044255/django-returns-sql-syntax-error-when-using-expressionwrapper-and-f-expressions