{"ast_node_type":"variable","tokens":[{"end":49,"kind":"keyword","start":0,"text":"&&"}]}
            && let Some(defaulted_param_def_id) =
            && tcx.features().generic_const_exprs()
                tcx.hir_opt_const_param_default_param_def_id(tcx.local_def_id_to_hir_id(def_id))