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: multiline_helpers.go
    path of file: ./repos/ginkgo/internal/test_helpers
    
    the code of the file until where you have to start completion: package test_helpers

import (
	"fmt"
	"strings"

	. "github.com/onsi/gomega"
	"github.com/onsi/gomega/gcustom"
)

func MultilineTextHelper(s string) string {
	lines := strings.Split(s, "\n")
	out := "\nstrings.Join([]string{\n"
	for _, l := range lines {
		out = out + fmt.Sprintf("    %#v,\n", l)
	}
	out += `}, "\n")`
	return out
}

func MatchLines(expected ...any) gcustom.CustomGomegaMatcher {
	data := map[string]any{}
	return gcustom.MakeMatcher(func(actual string) (bool, error) {
		data["RenderedActual"] = MultilineTextHelper(actual)
		if len(expected) =
    
func MatchLines(expected ...any) gcustom.CustomGomegaMatcher {
	data := map[string]any{}
	return gcustom.MakeMatcher(func(actual string) (bool, error) {
		data["RenderedActual"] = MultilineTextHelper(actual)
		if len(expected) == 0 && len(actual) == 0 {
			return true, nil
		}
		lines := strings.Split(actual, "\n")
		for idx, expectation := range expected {
			if idx >= len(lines) {
				data["Failure"] = "More Expectations than lines..."
				return false, nil
			}
			var matcher OmegaMatcher
			if expectedString, isString := expectation.(string); isString {
				matcher = Equal(expectedString)
			} else {
				matcher = expectation.(OmegaMatcher)
			}
			matches, err := matcher.Match(lines[idx])
			if err != nil {
				data["Failure"] = fmt.Sprintf("At line %d:\n%s", idx+1, err.Error())
				return false, nil
			}
			if !matches {
				data["Failure"] = fmt.Sprintf("At line %d:\n%s", idx+1, matcher.FailureMessage(lines[idx]))
				return false, nil
			}
		}
		if len(expected) < len(lines) {
			data["Failure"] = fmt.Sprintf("Missing expectations for last %d lines", len(lines)-len(expected))
			return false, nil
		}
		return true, nil
	}).WithTemplate("Failed {{.To}} MatchLines for:\n{{.Data.RenderedActual}}\n\n{{.Data.Failure}}").WithTemplateData(data)
}