Extract WSP from SharePoint Solution Store

using Microsoft.SharePoint;
using Microsoft.SharePoint.Administration;

static void Main(string[] args)
{
    const string extractingTo = "e:\\Solutions\\";
    SPSolutionCollection solutions = SPFarm.Local.Solutions;
    foreach (SPSolution solution in solutions)
    {
      Console.WriteLine("Extracting " + solution.Name);
      SPPersistedFile wspFile = solution.SolutionFile;
      wspFile.SaveAs(extractingTo + solution.Name);
    }        
}