I’ve been toying with transferring my workflow from RStan to CmdStanR. However, I don’t see an obvious way to simulate data using CmdStanR.

Using RStan I can use

```
sim_data <- stan(
file = generate_data.stan,
data = sim_values,
iter = 1,
chains = 1,
algorithm = "Fixed_param"
)
```

to simulate data, but I don’t see an equivalent to `algorithm = "Fixed_param"`

in CmdStanR’s `$sample()`

or a way to use `$generate_quantities()`

without starting with fitted parameters.