generate method
Implementation
String generate(Map<String, List<String>> localedMessage) {
final appLocalizedClassGenerator = AppLocalizedClassGenerator();
final localizationClassGenerator = LocalizationClassGenerator();
final locales = localedMessage.keys.toList();
final messages = localedMessage.entries.first.value;
return """
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
${appLocalizedClassGenerator.generate(locales, messages)}
${localedMessage.entries.map((it) => localizationClassGenerator.generate(it.key, it.value)).join('\n')}""";
}