syntax_data: {"ast_node_type":"variable","tokens":[{"end":51,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let name = if tcx.is_foreign_item(def_id) {
context_before:         // legacy symbol mangling scheme.
context_after:             if let Some(name) = attrs.link_name { name } else { tcx.item_name(def_id) }