syntax_data: {"ast_node_type":"other","tokens":[{"end":12,"kind":"keyword","start":0,"text":"assert!("}]}
source_snippet:     assert!(
context_before: pub fn set_session_globals_then<R>(session_globals: &SessionGlobals, f: impl FnOnce() -> R) -> R {
context_after:         !SESSION_GLOBALS.is_set(),