pub trait ComboBoxTextExt: IsA<ComboBoxText> + Sealed + 'static {
// Provided methods
fn append(&self, id: Option<&str>, text: &str) { ... }
fn append_text(&self, text: &str) { ... }
fn active_text(&self) -> Option<GString> { ... }
fn insert(&self, position: i32, id: Option<&str>, text: &str) { ... }
fn insert_text(&self, position: i32, text: &str) { ... }
fn prepend(&self, id: Option<&str>, text: &str) { ... }
fn prepend_text(&self, text: &str) { ... }
fn remove(&self, position: i32) { ... }
fn remove_all(&self) { ... }
}