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: packet_buffer_refs.go
    path of file: ./repos/sliver/implant/vendor/gvisor.dev/gvisor/pkg/tcpip/stack
    
    the code of the file until where you have to start completion: package stack

import (
	"fmt"

	"gvisor.dev/gvisor/pkg/atomicbitops"
	"gvisor.dev/gvisor/pkg/refs"
)

// enableLogging indicates whether reference-related events should be logged (with
// stack traces). This is false by default and should only be set to true for
// debugging purposes, 
    
func (r *packetBufferRefs) DecRef(destroy func()) {
	v := r.refCount.Add(-1)
	if packetBufferenableLogging {
		refs.LogDecRef(r, v)
	}
	switch {
	case v < 0:
		panic(fmt.Sprintf("Decrementing non-positive ref count %p, owned by %s", r, r.RefType()))

	case v == 0:
		refs.Unregister(r)

		if destroy != nil {
			destroy()
		}
	}
}