static void createPropertyToPropertyTypesMaps() {
        propertyToPropertyTypesMaps = new HashMap<>();
        propertyTypeCombinationToObjectNameMap.keySet().forEach(propertyTypeCombination -> {
            propertyToPropertyTypesMaps.putIfAbsent(propertyTypeCombination.propertyIdentifier, new HashSet<>());
            propertyToPropertyTypesMaps.get(propertyTypeCombination.propertyIdentifier).add(propertyTypeCombination.propertyDataType);
        });
    }
a map which maps property to type variants
protocols/bacnetip/src/test/java/org/apache/plc4x/protocol/bacnetip/BACnetObjectsDefinitions.java