syntax_data: {"ast_node_type":"function","tokens":[{"end":63,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:         fn get_until_newline(src: &str, begin: usize) -> &str {
context_before:     pub fn get_line(&self, line_number: usize) -> Option<Cow<'_, str>> {
context_after:             // We can't use `lines.get(line_number+1)` because we might