syntax_data: {"ast_node_type":"function","tokens":[{"end":99,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet:     pub fn new_placeholder(tcx: TyCtxt<'tcx>, placeholder: ty::PlaceholderRegion) -> Region<'tcx> {
context_before:     #[inline]
context_after:         tcx.intern_region(ty::RePlaceholder(placeholder))