List<ScheduledSurvey> scheduledSurveys = scheduledSurveyService.find( visitDefinition.getContractor(), contractorGroups, entity.getDate() );		
		for (ScheduledSurvey scheduledSurvey : scheduledSurveys) {
			AbstractSurveyDefinition abstractSurveyDefinition = scheduledSurvey.getAbstractSurveyDefinition();
			if (abstractSurveyDefinition instanceof SurveyDefinition)
				visitDefinition.addSurveyDefinition( (SurveyDefinition) abstractSurveyDefinition );
			else if (abstractSurveyDefinition instanceof ProductSurveyDefinition)
				visitDefinition.addProductSurveyDefinition( (ProductSurveyDefinition) abstractSurveyDefinition );
			else
				throw new IllegalStateException( "nieznany typ definicji ankiety " + abstractSurveyDefinition.getClass().getName() );
		}