Augment a model stack

## Usage

```
# S3 method for model_stack
augment(x, new_data, ...)
```

## Arguments

- x
A fitted model stack; see

`fit_members()`

.- new_data
A rectangular data object, such as a data frame.

- ...
Additional arguments passed to

`predict.model_stack`

. In particular, see`type`

and`members`

.

## See also

The `collect_parameters()`

function is analogous to a `tidy()`

method for model stacks.