87     pub struct Binder {  struct
88         pub host: String,
89         pub port: u16,
90         cred: Option<ServerCredentials>,
93         _fetcher: Option<Box<Box<dyn ServerCredentialsFetcher + Send + Sync>>>,
96     impl Binder {  implementation
97         pub fn new(host: String, port: u16) -> Binder {  in new()
113         ) -> Binder {  in with_cred()
143     pub struct Binder {  struct
148     impl Binder {  implementation
149         pub fn new(host: String, port: u16) -> Binder {  in new()
160 use self::imp::Binder;
162 impl Debug for Binder {  implementation