syntax_data: {"ast_node_type":"other","tokens":[{"end":71,"kind":"keyword","start":0,"text":"LangItem::BikeshedGuaranteedNoDrop,"}]}
source_snippet:                                     LangItem::BikeshedGuaranteedNoDrop,
context_before:                                 self.tcx().require_lang_item(
context_after:                                     self.span,