You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: unmarshalSliceWildcard.go
    path of file: ./repos/sealer/vendor/github.com/polydawn/refmt/obj
    
    the code of the file until where you have to start completion: package obj

import (
	"reflect"

	. "github.com/polydawn/refmt/tok"
)

type unmarshalMachineSliceWildcard struct {
	target_rv    reflect.Value // target slice handle
	working_rv   reflect.Value // working slice (target is set to this at end)
	value_rt     reflect.Type
	valueZero_rv reflect.Value // a zer
    
func (mach *unmarshalMachineSliceWildcard) Step(driver *Unmarshaller, slab *unmarshalSlab, tok *Token) (done bool, err error) {
	switch mach.phase {
	case unmarshalMachineArrayWildcardPhase_initial:
		return mach.step_Initial(driver, slab, tok)
	case unmarshalMachineArrayWildcardPhase_acceptValueOrClose:
		return mach.step_AcceptValueOrClose(driver, slab, tok)
	}
	panic("unreachable")
}