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: plugins.go
    path of file: ./repos/elsa/core
    
    the code of the file until where you have to start completion: //go:build !windows
// +build !windows

package core

import "plugin"

// OpenPlugin open a dynamic lib and call the exported 
    
func OpenPlugin(path string, arg interface{}) interface{} {
	// open the plugin
	p, err := plugin.Open(path)
	if err != nil {
		panic(err)
	}
	// lookup for exported variable and assign the argument
	v, err := p.Lookup("V")
	if err != nil {
		panic(err)
	}
	*v.(*interface{}) = arg
	// lookup for ElsaPlugin export and call the function
	f, err := p.Lookup("ElsaPlugin")
	if err != nil {
		panic(err)
	}
	return f.(func() interface{})()
}