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: mod.go
    path of file: ./repos/steampipe/pkg/steampipeconfig/parse
    
    the code of the file until where you have to start completion: package parse

import (
	"context"
	"fmt"
	"log"
	"os"
	"path"

	"github.com/hashicorp/hcl/v2"
	"github.com/turbot/pipe-fittings/hclhelpers"
	"github.com/turbot/steampipe-plugin-sdk/v5/plugin"
	"github.com/turbot/steampipe/pkg/error_helpers"
	"github.com/turbot/steampipe/pkg/steampipeconfig/modconfig"
	"github.com/zclconf/go-cty/cty"
)

func LoadModfile(modPath string) (*modconfig.Mod, error) {
	modFilePath, exists := ModfileExists(modPath)
	if !exists {
		return nil, nil
	}

	// build an eval context just containing functions
	evalCtx := &hcl.EvalContext{
		Functions: ContextFunctions(modPath),
		Variables: make(map[string]cty.Value),
	}

	mod, res := ParseModDefinition(modFilePath, eval
    
func ParseModDefinition(modFilePath string, evalCtx *hcl.EvalContext) (*modconfig.Mod, *DecodeResult) {
	res := newDecodeResult()

	// if there is no mod at this location, return error
	if _, err := os.Stat(modFilePath); os.IsNotExist(err) {
		res.Diags = append(res.Diags, &hcl.Diagnostic{
			Severity: hcl.DiagError,
			Summary:  fmt.Sprintf("modfile %s does not exist", modFilePath),
		})
		return nil, res
	}

	fileData, diags := LoadFileData(modFilePath)
	res.addDiags(diags)
	if diags.HasErrors() {
		return nil, res
	}

	body, diags := ParseHclFiles(fileData)
	res.addDiags(diags)
	if diags.HasErrors() {
		return nil, res
	}

	workspaceContent, diags := body.Content(WorkspaceBlockSchema)
	res.addDiags(diags)
	if diags.HasErrors() {
		return nil, res
	}

	block := hclhelpers.GetFirstBlockOfType(workspaceContent.Blocks, modconfig.BlockTypeMod)
	if block == nil {
		res.Diags = append(res.Diags, &hcl.Diagnostic{
			Severity: hcl.DiagError,
			Summary:  fmt.Sprintf("failed to parse mod definition file: no mod definition found in %s", modFilePath),
		})
		return nil, res
	}
	var defRange = hclhelpers.BlockRange(block)
	mod := modconfig.NewMod(block.Labels[0], path.Dir(modFilePath), defRange)
	// set modFilePath
	mod.SetFilePath(modFilePath)

	mod, res = decodeMod(block, evalCtx, mod)
	if res.Diags.HasErrors() {
		return nil, res
	}

	// NOTE: IGNORE DEPENDENCY ERRORS

	// call decode callback
	diags = mod.OnDecoded(block, nil)
	res.addDiags(diags)

	return mod, res
}