docs: private long numDepthWiseParams(SeparableConvolution2D layerConf) {
          int[] kernel = layerConf.getKernelSize();
          val nIn = layerConf.getNIn();
          val depthMultiplier = layerConf.getDepthMultiplier();
  
          return nIn * depthMultiplier * kernel[0] * kernel[1];
      }