syntax_data: {"ast_node_type":"other","tokens":[{"end":20,"kind":"keyword","start":0,"text":"}"}]}
source_snippet:             } else {
context_before:                 recurse_build(tcx, body, arg, root_span)?
context_after:                 maybe_supported_error(GenericConstantTooComplexSub::BorrowNotSupported(node.span))?