def serialize(self,writer: SerializationWriter) -> None:
        """
        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        """
        if writer is None:
            raise TypeError("writer cannot be null.")
        writer.write_str_value("activityIdentifier", self.activity_identifier)
        writer.write_int_value("countEntitled", self.count_entitled)
        writer.write_int_value("countEntitledForProvisioning", self.count_entitled_for_provisioning)
        writer.write_int_value("countEscrowed", self.count_escrowed)
        writer.write_int_value("countEscrowedRaw", self.count_escrowed_raw)
        writer.write_int_value("countExported", self.count_exported)
        writer.write_int_value("countExports", self.count_exports)
        writer.write_int_value("countImported", self.count_imported)
        writer.write_int_value("countImportedDeltas", self.count_imported_deltas)
        writer.write_int_value("countImportedReferenceDeltas", self.count_imported_reference_deltas)
        writer.write_object_value("error", self.error)
        writer.write_str_value("@odata.type", self.odata_type)
        writer.write_enum_value("state", self.state)
        writer.write_datetime_value("timeBegan", self.time_began)
        writer.write_datetime_value("timeEnded", self.time_ended)
        writer.write_additional_data_value(self.additional_data)

        Serializes information the current object
        param writer: Serialization writer to use to serialize this model
        Returns: None
        
msgraph/generated/models/synchronization_task_execution.py