gtk-tree-model-sort-convert-child-path-to-path (model path)

model -- a gtk-tree-model-sort object
path -- a gtk-tree-path instance to convert

A gtk-tree-path instance, or nil.

Converts path to a path relative to model. That is, path points to a path in the child model. The returned path will point to the same row in the sorted model. If path is not a valid path on the child model, then nil is returned.