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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_dict(self, db_obj):
 """Create a Json-like dictionary for objects managed by this object store. Parameters db_obj : (Sub-class of)ObjectHandle Returns ------- (JSON) Json-like object, i.e., dictionary. """

        # Base Json serialization for database objects
        return {
            '_id' : db_obj.identifier,
            'timestamp' : str(db_obj.timestamp.isoformat()),
            'properties' : db_obj.properties}