docs: public final void postConstruct() {
          Assert.equals(2, this.tileSize.length, "tileSize must have exactly 2 elements to the array.  Was: " +
                  Arrays.toString(this.tileSize));
          Assert.equals(2, this.topLeftCorner.length,
                        "topLeftCorner must have exactly 2 elements to the array.  Was: " +
                                Arrays.toString(this.topLeftCorner));
          Assert.equals(2, this.matrixSize.length,
                        "matrixSize must have exactly 2 elements to the array.  Was: " +
                                Arrays.toString(this.matrixSize));
      }