discoverProjectAddons() {
    let project = this.project;

    let addonPackageList = [];

    this.addPackages(addonPackageList, project.isEmberCLIAddon() ? [this] : null);
    this.addPackages(addonPackageList, this.cliInfo ? this.cliInfo.inRepoAddons : null);
    this.addPackages(addonPackageList, this.internalAddons);
    this.addPackages(addonPackageList, this.devDependencyPackages, (pkgInfo) => !pkgInfo.isForAddon());
    this.addPackages(addonPackageList, this.dependencyPackages, (pkgInfo) => !pkgInfo.isForAddon());
    this.addPackages(addonPackageList, this.inRepoAddons);

    return addonPackageList;
  }
Discover the child addons for this packageInfo, which corresponds to a Project.

@method discoverProjectAddons