syntax_data: {"ast_node_type":"other","tokens":[{"end":25,"kind":"keyword","start":0,"text":".join(\""}]}
source_snippet:             .join(" | ");
context_before:             .collect::<Vec<String>>()
context_after:         if witnesses.iter().all(|p| p.is_never_pattern()) && cx.tcx.features().never_patterns() {