syntax_data: {"ast_node_type":"variable","tokens":[{"end":83,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:                 let ValTreeKind::Branch(box [actual_variant_idx]) = *valtree else {
context_before:             Constructor::Variant(variant_index) => {
context_after:                     bug!("malformed valtree for an enum")