docs: public static INDArrayIndex[] fillIn(int[] shape, INDArrayIndex... indexes) {
          if (shape.length == indexes.length)
              return indexes;
  
          INDArrayIndex[] newIndexes = new INDArrayIndex[shape.length];
          System.arraycopy(indexes, 0, newIndexes, 0, indexes.length);
  
          for (int i = indexes.length; i < shape.length; i++) {
              newIndexes[i] = NDArrayIndex.interval(0, shape[i]);
          }
          return newIndexes;
  
      }