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: certs.go
    path of file: ./repos/hoverfly/vendor/github.com/SpectoLabs/goproxy
    
    the code of the file until where you have to start completion: package goproxy

import (
	"crypto/tls"
	"crypto/x509"
)

func init() {
	if goproxyCaErr != nil {
		pan
    
func init() {
	if goproxyCaErr != nil {
		panic("Error parsing builtin CA " + goproxyCaErr.Error())
	}
	var err error
	if GoproxyCa.Leaf, err = x509.ParseCertificate(GoproxyCa.Certificate[0]); err != nil {
		panic("Error parsing builtin CA " + err.Error())
	}
}