using functional interfaces in java [closed]

I have ProductSettings and ProductType. Product settings determine whether product types are enabled or not.

ProductSettings productSettings = new ProductSettings()            .setIsTreasuryInfoEnabled(true)            .setIsTreasurySwiftInfoEnabled(true)            .setIsTreasuryExecutionControlEnabled(true)            .setIsAcceptEnabled(true);public enum ProductType {INFO,INFOSWIFT,BUDGETCONTROL,ACCEPT,DIRECTACCOUNTCONTROL

how can i fill the enabledProductTypes set using functional interfaces and vs task - enable settings by having product types?

Set<ProductType> enabledProductTypes = EnumSet.noneOf(ProductType.class);

I created map

static Map<ProductType, Predicate<ProductSettings>> mapGetter = new HashMap<>();static Map<ProductType, BiConsumer<ProductSettings, Boolean>> mapSetter = new HashMap<>();

and filled out mapGetter with Predicate like this:

mapGetter.put(ProductType.ACCEPT, ProductSettings::getIsAcceptEnabled);mapGetter.put(ProductType.INFO,ProductSettings::getIsTreasuryInfoEnabled);

and filled out mapSetter with BiConsumer like this:

mapSetter.put(ProductType.ACCEPT, ProductSettings::setIsAcceptEnabled);mapSetter.put(ProductType.INFO, ProductSettings::setIsTreasuryInfoEnabled);

but how to use it I can't understand.I guess i shoul iterate by my map