As part of the effort, some Transformer s will need to be ported as well to the new ItemProviderStrategy.

As part of MGNLUI-5272, the following existing transformers have been found

info.magnolia.personalization.visitor.transformer.VisitorTraitListToSetTransformer

•  Specific ListToSetTransformer for valueField in visitor trait which writes to the item also in case of an empty collection. Nothing to do here apparently.

info.magnolia.personalization.cookie.CookieFieldTransformer

• #getCompositePropertyName returns "cookieName" or "cookieValue" according to whether the arg is equal to the field name or not: need this as ItemProviderStrategy

info.magnolia.personalization.ui.SimpleTraitValueTransformer

• Simple extension of BasicTransformer which enforces 'value' as the resulting JCR property name.
• Probably need this as ItemProviderStrategy**

info.magnolia.personalization.ui.TraitAggregatorTransformer

• Extension of DelegatingMultiValueFieldTransformer which takes care of trait voters set up.
• Need this as ItemProviderStrategy

• info.magnolia.personalization.ui.TraitValueCompositeTransformer
• backs up trait value field which is similar to trait rule set field, but acts over simple trait values and is effectively a mixture of composite and multi-value fields