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: log.go
    path of file: ./repos/fyne
    
    the code of the file until where you have to start completion: package fyne

import (
	"log"
	"runtime"
)

// LogError reports an error to the command line with the specified err cause,
// i
    
func LogError(reason string, err error) {
	log.Println("Fyne error: ", reason)
	if err != nil {
		log.Println("  Cause:", err)
	}

	_, file, line, ok := runtime.Caller(1)
	if ok {
		log.Printf("  At: %s:%d", file, line)
	}
}