## Vacancy get started and input examples

`Vacancy` calculates the energy difference when removing an atom from the crystal structure. We only need to give the information of `supercell` to help calculate the vacancy energy and the default value of `supercell` is [1, 1, 1].

#### An example of the input file for Vacancy by deepmd:

```json
{
  "structures": "confs/mp-*",
  "interaction": {
    "type": "deepmd",
    "model": "frozen_model.pb",
    "type_map": {
      "Al": 0,
      "Mg": 1
    }
  },
  "properties": [
    {
      "type": "vacancy",
      "supercell": [
        1,
        1,
        1
      ]
    }
  ]
}
```