def SET_IS_SUBSET(*expressions):
return {'<STR_LIT>': list(expressions)}<EOL>
Takes two arrays and returns true when the first array is a subset of the second,
including when the first array equals the second array, and false otherwise.
https://docs.mongodb.com/manual/reference/operator/aggregation/setIsSubset/
for more details
:param expressions: The arrays (expressions)
:return: Aggregation operator