OptionalbyGroup the column by the text its cells SHOW rather than by value, as a spreadsheet's filter
list does: 1 under $0 and under 0% are two items, and a string of only spaces is a
blank. The items are then the texts an InSet { byDisplay: true } condition holds.
false — by value, the identity ICondition.InSetOption.items has.
OptionallimitThe distinct values to stop at.
Options for IFilter.getItems.