Warning if we pass argument which has no effect

It would be nice, if a warning appears when any argument is passed which has no effect.

For example
If we are using QTreeView::setFirstColumnSpanned()

Following code has no effect if index is passed as ( 1, 1)
setFirstColumnSpanned(0 , model()->index(1,1) , true)

As QTreeView does not support expanding any but the first column.