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: export.go
    path of file: ./repos/sliver/implant/vendor/golang.org/x/tools/internal/event/core
    
    the code of the file until where you have to start completion: // Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package core

import (
	"context"
	"sync/atomic"
	"time"
	"un
    
func SetExporter(e Exporter) {
	p := unsafe.Pointer(&e)
	if e == nil {
		// &e is always valid, and so p is always valid, but for the early abort
		// of ProcessEvent to be efficient it needs to make the nil check on the
		// pointer without having to dereference it, so we make the nil function
		// also a nil pointer
		p = nil
	}
	atomic.StorePointer(&exporter, p)
}