syntax_data: {"ast_node_type":"import","tokens":[{"end":67,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // should always work because the type is always `*mut ()`.
context_before:         // NOTE(eddyb) using an empty `ParamEnv`, and `unwrap`-ing the `Result`
context_after:         ..tcx.layout_of(ty::TypingEnv::fully_monomorphized().as_query_input(unit_ptr_ty)).unwrap()