syntax_data: {"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"\"one"}]}
source_snippet:         "one of: `legacy`, `v0` (RFC 2603), or `hashed`";
context_before:     pub(crate) const parse_symbol_mangling_version: &str =
context_after:     pub(crate) const parse_opt_symbol_visibility: &str =