func (*OCFWriter) Append is not appending my data to the avro file

[HarithaHarman]

input.json

package main

import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"

"os"

"github.com/linkedin/goavro/v2"

)

func main() {

jsonFile, err := os.Open("input.json")

if err != nil {
	fmt.Println(err)
}
defer jsonFile.Close()

// read our opened xmlFile as a byte array.
byteValue, _ := ioutil.ReadAll(jsonFile)

// we initialize our Users array
var result map[string]interface{}

// we unmarshal our byteArray which contains our resultset
json.Unmarshal(byteValue, &result)


finalresult := []map[string]interface{}{}
appendresult := []map[string]any{}
for k, v := range result {

	m1 := make(map[string]interface{})
	m2 := make(map[string]any)
	m1["name"] = k
	switch v.(type) {
	case string:
		m1["type"] = "string"
		m2[k] = v
		appendresult = append(appendresult, m2)
	case float64:
		m1["type"] = "long"
		m2[k] = v
		appendresult = append(appendresult, m2)

	default:
		m1["type"] = "null"
		m2[k] = result[k]
		appendresult = append(appendresult, m2)
	}

	finalresult = append(finalresult, m1)
}


jsonString, _ := json.Marshal(finalresult)



var fields []Field
json.Unmarshal(jsonString, &fields)

type recordschema struct {
	Name   string  `json:"name"`
	Type   string  `json:"type"`
	Fields []Field `json:"fields"`
}
group := recordschema{
	Name:   "record",
	Type:   "record",
	Fields: fields,
}
b, err := json.Marshal(group)

codec, err := goavro.NewCodec(string(b))
if err != nil {
	fmt.Println(err)
}

var ocfFileContents bytes.Buffer
writer, err := goavro.NewOCFWriter(goavro.OCFConfig{
	W:      &ocfFileContents,
	Schema: codec.Schema(),
})
if err != nil {
	fmt.Println(err)
}
err = writer.Append(appendresult)

fmt.Println(ocfFileContents.String())
file, err := os.Create("output16.avro")
if err != nil {
	panic(err)
}
defer file.Close()

// Write the Avro binary data to the file
_, err = file.Write(ocfFileContents.Bytes())
if err != nil {
	panic(err)
}

}

type Field struct {
Name string json:"name"
Type string json:"type"
}

[HarithaHarman]

Hi Team, I am trying to convert json file to avro file. after convertion the data is not appending properly as marked in the above image. could you please help me