refacts

src/isnd/Interfaces/IPackageManager.cs

@@ -22,6 +22,7 @@ namespace isnd.Interfaces
         void ÛpdateCatalogFor(Commit commit);
         Task<PackageDeletionReport> DeletePackageAsync(string pkgid, string version, string type);
         Task<PackageVersion> GetPackageAsync(string pkgid, string version, string type);
+        IEnumerable<PackageVersion> GetCatalogLeaf(string id, string version, string lower);
     }
 
 }