How to load properly PepperFlash in Electron on Mac

electron.pepper.flash.index.js

//this is jsut the "meat" of the solution
const PEPPERFLASH_PLUGIN = __dirname.indexOf("asar") >=0 ? '../resources/pepperFlash/mac/PepperFlashPlayer.plugin' : 'resources/pepperFlash/mac/PepperFlashPlayer.plugin'
let pluginName
switch (process.platform) {
    case 'win32':
        switch (process.arch) {
            case "x64":
                pluginName = PEPPERFLASH_PLUGIN_WIN64
                break;
            default:
                pluginName = PEPPERFLASH_PLUGIN_WIN32
                break;
        }
        break
    case 'darwin':
        pluginName = PEPPERFLASH_PLUGIN
        break
}

let flashPath = path.join(__dirname, pluginName);
app.commandLine.appendSwitch('ppapi-flash-path', flashPath);
app.commandLine.appendSwitch('ppapi-flash-version', '28.0.0.126');

mac.build.config.json

{
  "asar" : true,
  "extraResources": [
      "./public/**",
      "./resources/pepperFlash/mac/**"
  ]
}