`path` doesn't work with GtkTreeStoreLeaf

[IanButterworth]

Seems like the subtyping is broken?

ERROR: MethodError: no method matching path(::Gtk4.GtkTreeStoreLeaf, ::Gtk4._GtkTreeIter)
The function `path` exists, but no method is defined for this combination of argument types.

Closest candidates are:
  path(::Gtk4.GtkTreeModel, ::Union{Gtk4._GtkTreeIter, Ref{Gtk4._GtkTreeIter}})
   @ Gtk4 ~/.julia/packages/Gtk4/BHOnE/src/tree.jl:453

Stacktrace:
 [1] (::ProfileView.TreeView.var"#build_treeview##56#build_treeview##57"{Gtk4.GtkTreeStoreLeaf, Gtk4.GtkTreeViewLeaf})(controller::Gtk4.GtkEventControllerKeyLeaf, keyval::UInt32, keycode::UInt32, state::Int32)
   @ ProfileView.TreeView ~/Documents/GitHub/ProfileView.jl/src/treeview.jl:279
 [2] (::Gtk4.GLib.var"#GClosureMarshal##0#GClosureMarshal##1"{Ptr{Gtk4.GLib.GValue}, UInt32, Ptr{Gtk4.GLib.GValue}, Vector{Any}, ProfileView.TreeView.var"#build_treeview##56#build_treeview##57"{Gtk4.GtkTreeStoreLeaf, Gtk4.GtkTreeViewLeaf}})()
   @ Gtk4.GLib ~/.julia/packages/Gtk4/BHOnE/src/GLib/signals.jl:63

I had to define my own

_path(treeModel, iter) = Gtk4.GtkTreePath(ccall((:gtk_tree_model_get_path, Gtk4.libgtk4), Ptr{Gtk4.GtkTreePath},
                            (Ptr{Gtk4.GObject}, Ref{Gtk4._GtkTreeIter}),
                            treeModel, iter))

[jwahlstrand]

Weird, there's an autogenerated method Gtk4.G_.get_path for each GObject that implements the interface GtkTreeModel, but something is preventing the getter and setter methods (Gtk4.path) from being generated. I'll look into it, but you should be able to use Gtk4.G_.get_path for now.

[IanButterworth]

I tried that but the 2nd arg didn't match those.

[jwahlstrand]

I just added some path methods that will hopefully work. There may be other TreeView issues lurking. I haven't spent much time on that API since it is deprecated in GTK4 in favor of ListView, ColumnView, etc.