> print(group_vfold_cv(iris, "Species"), n = 2)
# Group -fold cross-validation 
# A tibble: 3 x 2
  splits           id       
  <named list>     <chr>    
1 <split [100/50]> Resample1
2 <split [100/50]> Resample2
# ... with 1 more row

