Make.Columnval create :
?header_for_testing:string ->
?classes:string list ->
header:cell ->
render:(Row.Id.t -> Row.t -> cell) ->
group:Base.String.t option ->
unit ->
tCreate a column specification.
group allows grouping of columns. A run of adjacent (as defined by index) columns that share the same group will have their headers displayed in a two-row layout, like:
| group name +---------+---------+ | header1 | header2 | ... +---------+---------+ | ... | ... | ...