@interface PGPublicEventCategoryFeatureExtractor : PGGraphFeatureExtractor + (id)prefix; + (id)_labelProcessingForVersion:(long long)a0 label:(id)a1; + (id)_processedLabelsForVersion:(long long)a0; + (id)_rawLabelsForVersion:(long long)a0; - (id)initWithError:(id *)a0; - (id)initWithVersion:(long long)a0 error:(id *)a1; @end