Nest levels
Examples
product <- data.frame(companies_id = 1, x = 1)
company <- data.frame(companies_id = 1, x = 1)
nest_levels(product, company)
#> # A tibble: 1 × 3
#> companies_id product company
#> <dbl> <list> <list>
#> 1 1 <tibble [1 × 1]> <tibble [1 × 1]>