AssetDatabase.ExportPackage
static function ExportPackage(assetPathName: string, fileName: string): void;
static function ExportPackage(assetPathName: string, fileName: string, flags: ExportPackageOptions): void;
static function ExportPackage(assetPathNames: string[], fileName: string, flags: ExportPackageOptions = ExportPackageOptions.Default): void;
Description

Exports the assets identified by assetPathNames to a unitypackage file in fileName.

See Also: ExportPackageOptions for information on how you can affect what gets exported.