[INPUT_SEPARATOR]
I need to add the necessary imports for the type annotations. Let me fix that.
```
reference [1,2,3,4]
```
[INPUT_SEPARATOR]
```
reference {}
```
[INPUT_SEPARATOR]
```
reference {inds: [1,2,3,4]}
```
[INPUT_SEPARATOR]
```
reference {'data': [0.0, 0.0], 'indices': [0, 1], 'indptr': [0, 1, 2], 'shape': (2, 2), 'source_indices': [1]}
```
