syntax_data: {"ast_node_type":"variable","tokens":[{"end":55,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let mut lines = vec![RelativeBytePos::from_u32(0)];
context_before: pub(crate) fn analyze_source_file(src: &str) -> (Vec<RelativeBytePos>, Vec<MultiByteChar>) {
context_after:     let mut multi_byte_chars = vec![];