title: How can I tell what arima model this code is running?
body: <p>I'm reading over some R code, and I've come across a line that where the function prototype doesn't seem to match what I've seen in the library's api (<code>fabletools</code>).</p>
  
  <pre><code>fitted_model = a_time_series %&gt;%
  filter(date &lt;= tsibble::year(someyear)) %&gt;%
  fabletools::model(arima = ARIMA(time)
  </code></pre>
  
  <p>...Where time is a column from a a_time_series. How do I tell what arima model this is using? </p>
  
  <p>(e.g. arima(1,1,1) or arima(0,1,1) ,etc) </p>
  
  <p>I've checked this <a href="https://fable.tidyverts.org/reference/ARIMA.html" rel="nofollow noreferrer">documentation</a> however, the function prototypes don't seem to match.</p>