Parses a file containing a UI definition building only the requested objects and merges them with the current contents of this.
Upon errors, 0 will be returned and throws will be assigned a `GError` from the gtk_builder_error, g_markup_error or g_file_error domain.
If you are adding an object that depends on an object that is not its child (for instance a `GtkTreeView` that depends on its `GtkTreeModel`),
you have to explicitly list all of them in
the name of the file to parse
nul-terminated array of objects to build
true on success, false if an error occurred