Require urca for forecast() examples

Author: mitchelloharawild

DESCRIPTION

@@ -77,4 +77,4 @@ Encoding: UTF-8
 Language: en-GB
 Roxygen: list(markdown = TRUE, roclets=c('rd', 'collate',
     'namespace'))
-RoxygenNote: 7.3.1
+RoxygenNote: 7.3.2

R/forecast.R

@@ -44,7 +44,7 @@
 #' - All columns in `new_data`, excluding those whose names conflict with the
 #'   above.
 #'   
-#' @examplesIf requireNamespace("fable", quietly = TRUE) && requireNamespace("tsibbledata", quietly = TRUE)
+#' @examplesIf requireNamespace("fable", quietly = TRUE) && requireNamespace("tsibbledata", quietly = TRUE) && requireNamespace("urca", quietly = TRUE)
 #' library(fable)
 #' library(tsibble)
 #' library(tsibbledata)