def get_field_deserializers(self,) -> dict[str, Callable[[ParseNode], None]]:
        """
        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        """
        fields: dict[str, Callable[[Any], None]] = {
            "activity": lambda n : setattr(self, 'activity', n.get_str_value()),
            "availability": lambda n : setattr(self, 'availability', n.get_str_value()),
            "expirationDuration": lambda n : setattr(self, 'expiration_duration', n.get_timedelta_value()),
            "sessionId": lambda n : setattr(self, 'session_id', n.get_str_value()),
        }
        return fields

        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        
msgraph/generated/communications/presences/item/set_presence/set_presence_post_request_body.py