syntax_data: {"ast_node_type":"other","tokens":[{"end":53,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet:     pub(crate) const parse_number: &str = "a number";
context_before:     pub(crate) const parse_opt_comma_list: &str = parse_comma_list;
context_after:     pub(crate) const parse_opt_number: &str = parse_number;