syntax_data: {"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:         // but only if the inner type has a sized constraint. Thus we skip the binder,
context_before:         // We cannot instantiate the binder, so just return the *original* type back,
context_after:         // but don't actually use the result from `sized_constraint_for_ty`.