syntax_data: {"ast_node_type":"other","tokens":[{"end":67,"kind":"keyword","start":0,"text":"(&ty::PatternKind::Or(a),"}]}
source_snippet:             (&ty::PatternKind::Or(a), &ty::PatternKind::Or(b)) => {
context_before:             }
context_after:                 if a.len() != b.len() {