def get_field_deserializers(self,) -> dict[str, Callable[[ParseNode], None]]:
        """
        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        """
        from ..entity import Entity
        from .external_activity_result import ExternalActivityResult
        from .external_activity_type import ExternalActivityType
        from .identity import Identity

        from ..entity import Entity
        from .external_activity_result import ExternalActivityResult
        from .external_activity_type import ExternalActivityType
        from .identity import Identity

        fields: dict[str, Callable[[Any], None]] = {
            "performedBy": lambda n : setattr(self, 'performed_by', n.get_object_value(Identity)),
            "startDateTime": lambda n : setattr(self, 'start_date_time', n.get_datetime_value()),
            "type": lambda n : setattr(self, 'type', n.get_enum_value(ExternalActivityType)),
        }
        super_fields = super().get_field_deserializers()
        fields.update(super_fields)
        return fields

        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        
msgraph/generated/models/external_connectors/external_activity.py