def get_field_deserializers(self,) -> dict[str, Callable[[ParseNode], None]]:
        """
        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        """
        from ......models.external_connectors.external_activity import ExternalActivity

        from ......models.external_connectors.external_activity import ExternalActivity

        fields: dict[str, Callable[[Any], None]] = {
            "activities": lambda n : setattr(self, 'activities', n.get_collection_of_object_values(ExternalActivity)),
        }
        return fields

        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        
msgraph/generated/connections/item/items/item/microsoft_graph_external_connectors_add_activities/add_activities_post_request_body.py