def OBJECT_TO_ARRAY(_object):
return {'<STR_LIT>': _object}<EOL>
Converts a document to an array. The return array contains a element for each field/value pair in the original document.
See https://docs.mongodb.com/manual/reference/operator/aggregation/objectToArray/
for more details
:param _object: can be any valid expression as long as it resolves to a document object.
:return: Aggregation operator