}
if (lastException != null) throw lastException;
  public static final SSLContext getInstance(String protocol)    throws NoSuchAlgorithmException  {    Provider[] provs = Security.getProviders();    for (int i = 0; i < provs.length; i++)      {        try          {            return getInstance(protocol, provs[i]);          }        catch (NoSuchAlgorithmException ignore)          {          }      }    throw new NoSuchAlgorithmException(protocol);  }