syntax_data: {"ast_node_type":"function","tokens":[{"end":61,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn new(always_live: &'a DenseBitSet<Local>) -> Self {
context_before:     /// This should include at least all locals that are ever borrowed.
context_after:         MaybeTransitiveLiveLocals { always_live }