get_package_sack
Description:
Gets a package sack from the transaction.
Parameters:
| this | 
           a valid Results instance  | 
      
Returns:
| 
           A PackageSack of data, unref to free.  | 
      
Gets a package sack from the transaction.
| this | 
           a valid Results instance  | 
      
| 
           A PackageSack of data, unref to free.  |