code: public void validateCompletely (@Nonnull final IPSErrorHandler aErrorHandler)
    {
      ValueEnforcer.notNull (aErrorHandler, "ErrorHandler");
  
      try
      {
        getOrCreateBoundSchema ().getOriginalSchema ().validateCompletely (aErrorHandler);
      }
      catch (final RuntimeException ex)
      {
        // May happen when XPath errors are contained
      }
    }
docs: Use the provided error handler to validate all elements in the schematron.
  It tries to catch as many errors as possible.
  
  @param aErrorHandler
  The error handler to use. May not be <code>null</code>.