code: @Override
      public INDArray randn(long rows, long columns, long seed) {
          Nd4j.getRandom().setSeed(seed);
          return randn(new long[] {rows, columns}, Nd4j.getRandom());
      }
docs: Random normal using the specified seed
  
  @param rows    the number of rows in the matrix
  @param columns the number of columns in the matrix
  @return