{"ast_node_type":"other","tokens":[{"end":85,"kind":"keyword","start":0,"text":"tt.splice(i..i"}]}
                tt.splice(i..i + old_len, replacement.flat_tokens().iter().cloned());
                let len_diff = replacement.len() as i64 - old_len as i64;
                // Skip the newly inserted replacement, we don't want to visit it.