Reveals full metadata or just the names for the (work)sheets inside a (spread)Sheet.
Something that identifies a Google Sheet: its file ID, a URL from
which we can recover the ID, an instance of
sheet_properties(): A tibble with one row per (work)sheet.
sheet_names(): A character vector of (work)sheet names.
#>  "Africa" "Americas" "Asia" "Europe" "Oceania"