_getAddonEntryPoint() {
    if (!this.addonMainPath) {
      throw new Error(`${this.pkg.name} at ${this.realPath} is missing its addon main file`);
    }

    // Load the addon.
    // TODO: Future work - allow a time budget for loading each addon and warn
    // or error for those that take too long.
    return require(this.addonMainPath);
  }
Gets the addon entry point

@method _getAddonEntryPoint
@return {Object|Function} The exported addon entry point
@private