System.Security.SecurityManager.IsGranted C# (CSharp) Method

        public static bool IsGranted(IPermission perm)
        {
            return false;
        }

 internal static IPermission CheckPermissionSet(Assembly a, PermissionSet ps, bool noncas)
 {
     if (ps.IsEmpty())
     {
         return(null);
     }
     foreach (object obj in ps)
     {
         IPermission permission = (IPermission)obj;
         if (!noncas && permission is CodeAccessPermission)
         {
             if (!SecurityManager.IsGranted(a, permission))
             {
                 return(permission);
             }
         }
         else
         {
             try
             {
                 permission.Demand();
             }
             catch (SecurityException)
             {
                 return(permission);
             }
         }
     }
     return(null);
 }