| packageFolder | Folder containing the package. ArgumentExceptionis thrown ifpackageFolderisnullor empty. | 
| targetFolder | Folder where the Package Manager will write the GZip tarball file. The Package Manager will create this folder if it does not already exist. ArgumentExceptionis thrown iftargetFolderisnullor empty. | 
PackRequest A PackRequest instance, which you can use to monitor the asynchronous operation, and retrieve the result when the operation is complete.
Creates a GZip tarball file from a package folder. The format and content of the file is the same as if the package was published to a package registry.
Note: Make sure any other Client operations have completed before calling this method. For more information, see the note on the Client class reference page.