registerUpdateCheck() {}

	/**
	 * Updates a given addon or plugin.
	 *
	 * @since 4.4.3
	 *
	 * @param  string $name    The addon name/sku.
	 * @param  bool   $network Whether we are in a network environment.
	 * @return bool            Whether the installation was succesful.
	 */
	public function upgradeAddon( $name, $network ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
		return false;
	}

	/**
	 * Get the download URL for the given addon.
	 *
	 * @since 4.4.3
	 *
	 * @param  string $sku The addon sku.
	 * @return string      The download url for the addon.
	 */
	public function getDownloadUrl( $sku ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
		return '';
	}
}