code: func (co *Context) SpatialTfGridGeneratorBackward(stDesc *SpatialTransformer, dgrid Memory, dtheta Memory) error {
  	// DOUBLECHECK: "cudnnSpatialTfGridGeneratorBackward" returns Memory type in Parameter 3
  	// call cudnnSpatialTfGridGeneratorBackward
  	return result(C.cudnnSpatialTfGridGeneratorBackward(co.internal, stDesc.internal, dgrid.Pointer(), dtheta.Pointer()))
  }
docs: // SpatialTfGridGeneratorBackward computes the gradient of a grid generation operation.