pub trait LiveRead {
// Required method
fn live_read_to(&self, id: LiveId, out: &mut Vec<LiveNode>);
// Provided method
fn live_read(&self) -> Vec<LiveNode> { ... }
}
pub trait LiveRead {
// Required method
fn live_read_to(&self, id: LiveId, out: &mut Vec<LiveNode>);
// Provided method
fn live_read(&self) -> Vec<LiveNode> { ... }
}