void gtk_tree_model_sort_clear_cache ( GtkTreeModelSort* tree_model_sort )
This function should almost never be called. It clears the
of any cached iterators that haven’t been reffed with
gtk_tree_model_ref_node(). This might be useful if the child model being
sorted is static (and doesn’t change often) and there has been a lot of
unreffed access to nodes. As a side effect of this function, all unreffed
iters will be invalid.
Deprecated since: 4.10
Please do not use it in newly written code.