convert_path_to_child_path

Converts sorted_path to a path on the child model of this.

That is, sorted_path points to a location in this. The returned path will point to the same location in the model not being sorted. If sorted_path does not point to a location in the child model, null is returned.

Parameters:

this	A `GtkTreeModelSort`
sorted_path	A `GtkTreePath` to convert

Returns:

A newly allocated `GtkTreePath`