syntax_data: {"ast_node_type":"variable","tokens":[{"end":92,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let metadata = if let Some(metadata_def_id) = tcx.lang_items().metadata_type() {
context_after:                 let pointee_metadata = Ty::new_projection(tcx, metadata_def_id, [pointee]);