"std::time::Duration"|"core::time::Duration" => Some(".as_secs()"),
"std::time::SystemTime" => Some(".duration_since(::std::time::SystemTime::UNIX_EPOCH).expect(\"Times must be post-1970\").as_secs()"),
"std::io::Error" if !is_ref => Some(")"),
"std::time::Duration"|"core::time::Duration" => Some(".as_secs()"),
"std::time::SystemTime" => Some(".duration_since(::std::time::SystemTime::UNIX_EPOCH).expect(\"Times must be post-1970\").as_secs()"),
"std::io::Error" if !is_ref => Some(")"),