tKey() {
			if ( $this->package->isMuPlugin() ) {
				return $this->muPluginFile;
			}
			return $this->pluginFile;
		}

		protected function getNoUpdateItemFields() {
			return array_merge(
				parent::getNoUpdateItemFields(),
				array(
					'id'            => $this->pluginFile,
					'slug'          => $this->slug,
					'plugin'        => $this->pluginFile,
					'icons'         => array(),
					'banners'       => array(),
					'banners_rtl'   => array(),
					'tested'        => '',
					'compatibility' => new stdClass(),
				)
			);
		}

		/**
		 * Alias for isBeingUpgraded().
		 *
		 * @deprecated
		 * @param WP_Upgrader|null $upgrader The upgrader that's performing the current update.
		 * @return bool
		 */
		public function isPluginBeingUpgraded($upgrader = null) {
			return $this->isBeingUpgraded($upgrader);
		}

		/**
		 * Is there an update being installed for this plugin, right now?
		 *
		 * @param WP_Upgrader|null $upgrader
		 * @return bool
		 */
		public function isBeingUpgraded($upgrader = null) {
			return $this->upgraderStatus->isPluginBeingUpgraded($this->pluginFile, $upgrader);
		}

		/**
		 * Get the details of the currently available update, if any.
		 *
		 * If no updates are available, or if the last known update version is below or equal
		 * to the currently installed version, this method will return NULL.
		 *
		 * Uses cached update data. To retrieve update information straight from
		 * the metadata URL, call requestUpdate() instead.
		 *
		 * @return Puc_v4p11_Plugin_Update|null
		 */
		public function getUpdate() {
			$update = parent::getUpdate();
			if ( isset($update) ) {
				/** @var Puc_v4p11_Plugin_Update $update */
				$update->filename = $this->pluginFile;
			}
			return $update;
		}

		/**
		 * Get the translated plugin title.
		 *
		 * @deprecated
		 * @return string
		 */
		public function getPluginTitle() {
			return $this->package->getPluginTitle();
		}

		/**
		 * Check if the current user has the required permissions to install updates.
		 *
		 * @return bool
		 */
		public function userCanInstallUpdates() {
			return current_user_can('update_plugins');
		}

		/**
		 * Check if the plugin file is inside the mu-plugins directory.
		 *
		 * @deprecated
		 * @return bool
		 */
		protected function isMuPlugin() {
			return $this->package->isMuPlugin();
		}

		/**
		 * MU plugins are partially supported, but only when we know which file in mu-plugins
		 * corresponds to this plugin.
		 *
		 * @return bool
		 */
		protected function isUnknownMuPlugin() {
			return empty($this->muPluginFile) && $this->package->isMuPlugin();
		}

		/**
		 * Get absolute path to the main plugin file.
		 *
		 * @return string
		 */
		public function getAbsolutePath() {
			return $this->pluginAbsolutePath;
		}

		/**
		 * Register a callback for filtering query arguments.
		 *
		 * The callback function should take one argument - an associative array of query arguments.
		 * It should return a modified array of query arguments.
		 *
		 * @uses add_filter() This method is a convenience wrapper for add_filter().
		 *
		 * @param callable $callback
		 * @return void
		 */
		public function addQueryArgFilter($callback){
			$this->addFilter('request_info_query_args', $callback);
		}

		/**
		 * Register a callback for filtering arguments passed to wp_remote_get().
		 *
		 * The callback function should take one argument - an associative array of arguments -
		 * and return a modified array or arguments. See the WP documentation on wp_remote_get()
		 * for details on what arguments are available and how they work.
		 *
		 * @uses add_filter() This method is a convenience wrapper for add_filter().
		 *
		 * @param callable $callback
		 * @return void
		 */
		public function addHttpRequestArgFilter($callback) {
			$this->addFilter('request_info_options', $callback);
		}

		/**
		 * Register a callback for filtering the plugin info retrieved from the external API.
		 *
		 * The callback function should take two arguments. If the plugin info was retrieved
		 * successfully, the first argument passed will be an instance of  PluginInfo. Otherwise,
		 * it will be NULL. The second argument will be the corresponding return value of
		 * wp_remote_get (see WP docs for details).
		 *
		 * The callback function should return a new or modified instance of PluginInfo or NULL.
		 *
		 * @uses add_filter() This method is a convenience wrapper for add_filter().
		 *
		 * @param callable $callback
		 * @return void
		 */
		public function addResultFilter($callback) {
			$this->addFilter('request_info_result', $callback, 10, 2);
		}

		protected function createDebugBarExtension() {
			return new Puc_v4p11_DebugBar_PluginExtension($this);
		}

		/**
		 * Create a package instance that represents this plugin or theme.
		 *
		 * @return Puc_v4p11_InstalledPackage
		 */
		protected function createInstalledPackage() {
			return new Puc_v4p11_Plugin_Package($this->pluginAbsolutePath, $this);
		}

		/**
		 * @return Puc_v4p11_Plugin_Package
		 */
		public function getInstalledPackage() {
			return $this->package;
		}
	}

endif;