syntax_data: {"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // For top-level or-patterns (the only ones we accept right now), when the
context_before:                 for pat in pat.iter_fields() {
context_after:                     // bindings are the same (e.g. there are none), the sub_branch is stored just