syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"PatKind::Leaf"}]}
source_snippet:             PatKind::Leaf { subpatterns, .. } => {
context_before:         match &pat.kind {
context_after:                 if let ty::Adt(adt_def, ..) = pat.ty.kind() {