syntax_data: {"ast_node_type":"struct","tokens":[{"end":63,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet: pub struct FmtPrinter<'a, 'tcx>(Box<FmtPrinterData<'a, 'tcx>>);
context_before: // HACK(eddyb) boxed to avoid moving around a large struct by-value.