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: render.go
    path of file: ./repos/kubeedge/keadm/cmd/keadm/app/cmd/helm
    
    the code of the file until where you have to start completion: package helm

import (
	"fmt"
	"io/fs"
	"os"
	"path/filepath"
	"sort"
	"strings"

	"helm.sh/helm/v3/pkg/chart"
	"helm.sh/helm/v3/pkg/chart/loader"
	"helm.sh/helm/v3/pkg/chartutil"
	"helm.sh/helm/v3/pkg/engine"
)

// Inspired by https://github.com/istio/istio/blob/194bc3c820a37a38ef40a1cf305529638fbfa169/operator/pkg/helm/renderer.go

const (
	// YAMLSeparator is a separator for multi-document YAML files.
	YAMLSeparator = "\n---\n"

	// DefaultProfileString is the name of the default profile.
	DefaultProfileString = "version"

	// NotesFileNameSuffix is the file name suffix for helm notes.
	// see https://helm.sh/docs/chart_template_guide/notes_files/
	NotesFileNameSuffix = ".txt"

	// Chart Release Name
	ReleaseName = "kubeedge"
)

type TemplateFilterFunc func(string) bool

// Renderer is a helm template renderer for a fs.FS.
type Renderer struct {
	namespace      string
	componentName  string
	chart          *chart.Chart
	files          fs.FS
	d
    
func (h *Renderer) renderChart(filterFunc TemplateFilterFunc) (string, error) {
	options := chartutil.ReleaseOptions{
		Name:      ReleaseName,
		Namespace: h.namespace,
	}

	caps := *chartutil.DefaultCapabilities
	vals, err := chartutil.ToRenderValues(h.chart, h.profileValsMap, options, &caps)
	if err != nil {
		return "", err
	}

	if filterFunc != nil {
		filteredTemplates := []*chart.File{}
		for _, t := range h.chart.Templates {
			if filterFunc(t.Name) {
				filteredTemplates = append(filteredTemplates, t)
			}
		}
		h.chart.Templates = filteredTemplates
	}

	files, err := engine.Render(h.chart, vals)
	crdFiles := h.chart.CRDObjects()
	if err != nil {
		return "", err
	}

	// Create sorted array of keys to iterate over, to stabilize the order of the rendered templates
	keys := make([]string, 0, len(files))
	for k := range files {
		if strings.HasSuffix(k, NotesFileNameSuffix) {
			continue
		}
		keys = append(keys, k)
	}
	sort.Strings(keys)

	var sb strings.Builder
	for i := 0; i < len(keys); i++ {
		f := files[keys[i]]
		// add yaml separator if the rendered file doesn't have one at the end
		f = strings.TrimSpace(f) + "\n"
		if !strings.HasSuffix(f, YAMLSeparator) {
			f += YAMLSeparator
		}
		_, err := sb.WriteString(f)
		if err != nil {
			return "", err
		}
	}

	// Sort crd files by name to ensure stable manifest output
	if !h.skipCRDs {
		sort.Slice(crdFiles, func(i, j int) bool { return crdFiles[i].Name < crdFiles[j].Name })
		for _, crdFile := range crdFiles {
			f := string(crdFile.File.Data)
			// add yaml separator if the rendered file doesn't have one at the end
			f = strings.TrimSpace(f) + "\n"
			if !strings.HasSuffix(f, YAMLSeparator) {
				f += YAMLSeparator
			}
			_, err := sb.WriteString(f)
			if err != nil {
				return "", err
			}
		}
	}

	return sb.String(), nil
}