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zivce/better-mapping.java

Created September 25, 2020 07:52
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better-mapping.java
final List<String> categories = source.getCategories().stream()
.map(getUniqueItemIdentifierService()::getItemData)
.filter(Optional::isPresent)
.map(Optional::get)
.map(ItemData::getItemId)
.collect(Collectors.toList());
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