# `AshPostgres.CustomExtension`
[🔗](https://github.com/ash-project/ash_postgres/blob/v2.9.1/lib/custom_extension.ex#L5)

A custom extension implementation.

# `install`

```elixir
@callback install(version :: integer()) :: String.t()
```

# `uninstall`

```elixir
@callback uninstall(version :: integer()) :: String.t()
```

---

*Consult [api-reference.md](api-reference.md) for complete listing*