if let Some(params) = last_path_segment(qpath).args ;
if !params.parenthesized;
if let Some(inner_ty) = params.args.iter().find_map(|arg| match arg {
if let Some(params) = last_path_segment(qpath).args ;
if !params.parenthesized;
if let Some(inner_ty) = params.args.iter().find_map(|arg| match arg {