@interface MPSNNReduceFeatureChannelsSum : MPSNNReduceUnary @property (nonatomic) float weight; - (id)initWithCoder:(id)a0 device:(id)a1; - (id)initWithDevice:(id)a0; - (id)destinationImageDescriptorForSourceImages:(id)a0 sourceStates:(id)a1 paddingMethod:(unsigned long long)a2 sourceOffset:(struct { long long x0; long long x1; long long x2; } *)a3; - (void)weight:(float)a0; @end