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: shared.go
    path of file: ./repos/awless/vendor/github.com/aws/aws-sdk-go/awstesting/integration/smoke
    
    the code of the file until where you have to start completion: // +build integration

// Package smoke contains shared step definitions that are used across integration tests
package smoke

import (
	"encodi
    
func call(op string, args [][]string, allowError bool) {
	v := reflect.ValueOf(gucumber.World["client"])
	if m := findMethod(v, op); m != nil {
		t := m.Type()
		in := reflect.New(t.In(0).Elem())
		fillArgs(in, args)

		resps := m.Call([]reflect.Value{in})
		gucumber.World["response"] = resps[0].Interface()
		gucumber.World["error"] = resps[1].Interface()

		if !allowError {
			err, _ := gucumber.World["error"].(error)
			if err != nil {
				gucumber.T.Errorf("expect no error, got %v", err)
			}
		}
	} else {
		gucumber.T.Errorf("failed to find operation " + op)
	}
}