SparseBytemap (0.0) [1:5]
│ 
├─[1]:
│ Dense [1:10]
│ │ 
│ └─[1] [2] [3] [4] [5] [6] [7] [8] [9] [10]
│   2.0 0.0 1.0 2.0 0.0 1.0 2.0 0.0 1.0 2.0 

