{"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"if"}]}
                if let Some(by_value_pick) = by_value_pick {
                // Check for shadowing of a by-reference method by a by-value method (see comments on check_for_shadowing)
                    if let Ok(by_value_pick) = by_value_pick.as_ref() {