code: public static Generator<Matrix4x4D> createOrthogonal()
    {
      return () -> {
        final SecureRandom rng = new SecureRandom();
  
        final double r0c0 = 1.0;
        final double r0c1 = 0.0;
        final double r0c2 = 0.0;
        final double r0c3 = rng.nextDouble();
  
        final double r1c0 = 0.0;
        final double r1c1 = 1.0;
        final double r1c2 = 0.0;
        final double r1c3 = rng.nextDouble();
  
        final double r2c0 = 0.0;
        final double r2c1 = 0.0;
        final double r2c2 = 1.0;
        final double r2c3 = rng.nextDouble();
  
        final double r3c0 = 0.0;
        final double r3c1 = 0.0;
        final double r3c2 = 0.0;
        final double r3c3 = 1.0;
  
        return Matrix4x4D.of(
          r0c0, r0c1, r0c2, r0c3,
          r1c0, r1c1, r1c2, r1c3,
          r2c0, r2c1, r2c2, r2c3,
          r3c0, r3c1, r3c2, r3c3);
      };
    }
docs: Create a generator initialized with a default component generator that only
  produces orthogonal matrices.
  
  @return A generator