@class NSString, NSArray; @interface PGLibraryAveragePersonCountFeatureExtractor : PGFeatureExtractor @property (nonatomic, readonly) NSString *name; @property (nonatomic, readonly) NSArray *featureNames; @property (nonatomic, readonly) long long featureLength; - (id)init; - (id)floatVectorWithEntity:(id)a0 error:(id *)a1; @end