confirmcomposerpackage/composer.json

{
  "type": "composer-plugin",
  "name": "d3/confirmcomposerpackage",
  "require": {
    "composer-plugin-api": "^1.1"
  },
  "autoload": {
    "psr-4": {
      "D3\\confirmComposerPackage\\": "src"
    }
  },
  "extra": {
    "class": "D3\\confirmComposerPackage\\Plugin"
  }
}