@interface MPSNDArrayUnaryGradientKernel : MPSNDArrayMultiaryGradientKernel + (unsigned long long)expectedVirtualSourceCount; - (id)initWithCoder:(id)a0 device:(id)a1; - (id)initWithDevice:(id)a0; - (id)encodeToCommandBuffer:(id)a0 sourceArray:(id)a1 sourceGradient:(id)a2 gradientState:(id)a3; - (void)encodeToCommandBuffer:(id)a0 sourceArray:(id)a1 sourceGradient:(id)a2 gradientState:(id)a3 destinationArray:(id)a4; @end