pub trait TryVisitor<T, E: From<RecursionLimitError>> {
// Required methods
fn pre_visit(&mut self, expr: &T) -> Result<(), E>;
fn post_visit(&mut self, expr: &T) -> Result<(), E>;
}
pub trait TryVisitor<T, E: From<RecursionLimitError>> {
// Required methods
fn pre_visit(&mut self, expr: &T) -> Result<(), E>;
fn post_visit(&mut self, expr: &T) -> Result<(), E>;
}