syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:         match self {
context_before:     pub fn expect_placeholder_index(self) -> usize {
context_after:             CanonicalVarKind::Ty(_) | CanonicalVarKind::Region(_) | CanonicalVarKind::Const(_) => {