syntax_data: {"ast_node_type":"function","tokens":[{"end":84,"kind":"keyword","start":0,"text":"fn"}]}
source_snippet:     fn with_cached_task<T>(self, task: impl FnOnce() -> T) -> (T, I::DepNodeIndex) {
context_before:     }
context_after:         I::with_cached_task(self, task)