Function gtk4_sys::gtk_builder_extend_with_template

pub unsafe extern "C" fn gtk_builder_extend_with_template(
    builder: *mut GtkBuilder, 
    object: *mut GObject, 
    template_type: GType, 
    buffer: *const c_char, 
    length: ssize_t, 
    error: *mut *mut GError
) -> gboolean