token_extraction.go
func (f RequestTokenExtractorFunc) Extract(r *http.Request) (*jwt.JSONWebToken, error) {
	return f(r)
}
func (f RequestTokenExtractorFunc) Extract(r *http.Request) (*jwt.JSONWebToken, error) {
	return f(r)
}
func ( f RequestTokenExtractorFunc ) Extract ( r * http . Request ) ( * jwt . JSONWebToken , error ) { return f ( r ) }
// Extract calls f(r)
Extract calls f ( r )