code: def find_one(cls, *args, **kw):
  		
  		
  		if len(args) == 1 and not isinstance(args[0], Filter):
  			args = (getattr(cls, cls.__pk__) == args[0], )
  		
  		Doc, collection, query, options = cls._prepare_find(*args, **kw)
  		result = Doc.from_mongo(collection.find_one(query, **options))
  		
  		return result
docs: Get a single document from the collection this class is bound to.
  		
  		Additional arguments are processed according to `_prepare_find` prior to passing to PyMongo, where positional
  		parameters are interpreted as query fragments, parametric keyword arguments combined, and other keyword
  		arguments passed along with minor transformation.
  		
  		Automatically calls `to_mongo` with the retrieved data.
  		
  		https://api.mongodb.com/python/current/api/pymongo/collection.html#pymongo.collection.Collection.find_one