syntax_data: {"ast_node_type":"variable","tokens":[{"end":25,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let vec_len =
context_before:         Some(Class::Sse) => {
context_after:                 1 + cls[*i + 1..].iter().take_while(|&&c| c == Some(Class::SseUp)).count();