def ISO_WEEK_YEAR(expression):
return {'<STR_LIT>': expression}<EOL>
Returns the year number in ISO 8601 format.
The year starts with the Monday of week 1 and ends with the Sunday of the last week.
See https://docs.mongodb.com/manual/reference/operator/aggregation/isoWeekYear/
for more details
:param expression: expression or variable of a Date, a Timestamp, or an ObjectID
:return: Aggregation operator