syntax_data: {"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"Region::new_placeholder(tcx,"}]}
source_snippet:         Region::new_placeholder(tcx, placeholder)
context_before:     fn new_placeholder(tcx: TyCtxt<'tcx>, placeholder: ty::PlaceholderRegion) -> Self {
context_after:     }