docs: public static DenseTensor random(int[] dimensions, int[] sizes, double mean, double stddev) {
      DenseTensorBuilder builder = new DenseTensorBuilder(dimensions, sizes);
      Iterator<KeyValue> keyValueIter = builder.keyValueIterator();
      Random random = Pseudorandom.get();
      while (keyValueIter.hasNext()) {
        builder.put(keyValueIter.next().getKey(), (random.nextGaussian() * stddev) + mean);
      }
      return builder.buildNoCopy();
    }