syntax_data: {"ast_node_type":"function","tokens":[{"end":75,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet: pub fn create_default_session_globals_then<R>(f: impl FnOnce() -> R) -> R {
context_before: /// Default edition, no source map.
context_after:     create_session_globals_then(edition::DEFAULT_EDITION, &[], None, f)