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: github.go
    path of file: ./repos/corteza/server/vendor/github.com/markbates/goth/providers/github
    
    the code of the file until where you have to start completion: // Package github implements the OAuth2 protocol for authenticating users through Github.
// This package can be used as a reference implementation of an OAuth2 provider for Go
    
func NewCustomisedURL(clientKey, secret, callbackURL, authURL, tokenURL, profileURL, emailURL string, scopes ...string) *Provider {
	p := &Provider{
		ClientKey:    clientKey,
		Secret:       secret,
		CallbackURL:  callbackURL,
		providerName: "github",
		profileURL:   profileURL,
		emailURL:     emailURL,
	}
	p.config = newConfig(p, authURL, tokenURL, scopes)
	return p
}