syntax_data: {"ast_node_type":"other","tokens":[{"end":13,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             }
context_before:                 CanonicalVarKind::PlaceholderTy(placeholder.with_updated_universe(ui))
context_after:             CanonicalVarKind::PlaceholderRegion(placeholder) => {