(fflib) Domain classes should have no logic besides User Story-related commands

Opportunities.cls

public with sharing class Opportunities extends fflib_SObjectDomain {

	public Opportunities(List<Opportunity> records) {
		super(records);
	}

	public override void onAfterInsert() {
		new ApplyDefaultCurrency(recors).execute();
		new CalculateRevenueForecast(records)
				.andThen(new PublishLeadScore().forNew(records)).execute();
	}

	public override void onAfterUpdate(Map<Id,SObject> old) {
		new EnhanceContactData(records).execute();
		new CalculateRevenueForecast(records)
				.andThen(new PublishLeadScore().forChanged(records)).execute();
	}

    	public override void onValidate() {
		new VerifyThatUser().hasAdvancedPermission(records);
		new VerifyThat(records)
				.complyWith(new AccountInformationRules())
				.haveNoPotentialDuplicates();
	}

	public override void onAfterDelete() {
		new RemovedDependantRecords(records).execute();
	} 

	...
}