syntax_data: {"ast_node_type":"other","tokens":[{"end":60,"kind":"keyword","start":0,"text":"pub(crate)"}]}
source_snippet:     pub(crate) const parse_string_push: &str = parse_string;
context_before:     pub(crate) const parse_opt_string: &str = parse_string;
context_after:     pub(crate) const parse_opt_langid: &str = "a language identifier";