@interface _DPBiasedCoin : NSObject @property (readonly, nonatomic) double bias; + (id)coinWithBias:(double)a0; + (double)sanitizedProbability:(double)a0; - (id)init; - (BOOL)flip; - (id)initWithBias:(double)a0; - (unsigned char)generateByte; - (id)description; @end