void AccumulateWeightedAttributes ( [PCGMetadataEntryKey](API\Plugins\PCG\Metadata\PCGMetadataEntryKey) InKey, const [UPCGMetadata](API\Plugins\PCG\Metadata\UPCGMetadata) * InMetadata, float Weight, bool bSetNonInterpolableAttributes, [PCGMetadataEntryKey](API\Plugins\PCG\Metadata\PCGMetadataEntryKey) & OutKey )