Xpressengine\Plugin\Composer\ComposerFileWriter::get PHP Method

    public function get($key, $default = null)
    {
        return array_get($this->data, $key, $default);
    }

 /**
  * getChanged
  *
  * @param ComposerFileWriter $writer
  *
  * @return array
  */
 protected function getChangedPlugins(ComposerFileWriter $writer)
 {
     $changed = [];
     $changed['installed'] = $writer->get('xpressengine-plugin.operation.changed.installed', []);
     $changed['updated'] = $writer->get('xpressengine-plugin.operation.changed.updated', []);
     $changed['uninstalled'] = $writer->get('xpressengine-plugin.operation.changed.uninstalled', []);
     return $changed;
 }