I would be fine with that but then I can't use the same names since the extension function won't be chosen over the virtual function of the same name.

i have a jdbc toolkit that dumps to fwf and a fwf cursor/dataframe toolkit which is keeping me entertained.

val cursor: Cursor = cursorOf(root)
val resample = cursor.resample(0)
val grp = resample.group((1))
val pai2 = grp[2, 3]
val join: Cursor = join(grp[0, 1],pai2.`∑`(floatSum)

i chose the sum operator as a shorthand reducer cue(because typesafety lacks just one sum) , but i can bypass the intermediaries in the group clause with a block function to reduce inline (not shown)