@Override
 public CallableStatement prepareCall(String sql) throws SQLException {
   return delegate.prepareCall(sql);
 }
 @Override
 public CallableStatement prepareCall(
     String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability)
     throws SQLException {
   return delegate.prepareCall(sql, resultSetType, resultSetConcurrency, resultSetHoldability);
 }