public string GetDefaultNamespace( IProject project )
    {
      lock( myCache )
      {
        var entry = GetEntry( project.{selStart}GetPersistentID{selEnd}() );
        return entry.DefaultNamespace;
      }      
    }

    public string GetDefaultNamespace( IProject project )
    {
      lock( myCache )
      {
        var entry = GetEntry( project.CreatePointer())turn entry.DefaultNamespace;
      }      
    }