# `Continuum.ChildRef`
[🔗](https://github.com/Yyeger/Continuum/blob/main/lib/continuum/child_ref.ex#L1)

Handle for an asynchronously started child workflow.

`start_child/3` returns a `%Continuum.ChildRef{}`; pass it to `await_child/1`
to suspend until the child terminates and recover its result. The ref is
deterministic across replays:

  * `child_run_id` — the child run's id, derived deterministically from the
    parent run id, the start command id, and any `id:` option, so the same
    parent at the same cursor never starts two children on replay.
  * `start_command_id` — the command identity of the `start_child` call site.
  * `workflow` — the child workflow module.

# `t`

```elixir
@type t() :: %Continuum.ChildRef{
  child_run_id: binary(),
  start_command_id: term(),
  workflow: module()
}
```

---

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