{"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
        let llvm_pass_event_kind = profiler.alloc_string("LLVM Pass");
    pub(crate) fn new(profiler: Arc<SelfProfiler>) -> Self {
        Self { profiler, stack: Vec::default(), llvm_pass_event_kind }