syntax_data: {"ast_node_type":"other","tokens":[{"end":10,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         //
context_before:         // `vec![&&Option<i32>, &Option<i32>]`.
context_after:         // Applying the adjustments, we want to instead output `&&Some(n)` (as a THIR pattern). So