       return
     }
     let host = "example.com"
-    channel = gRPC.Channel(address: address, certificates: certificates, host: host)
+    channel = Channel(address: address, certificates: certificates, host: host)
   } else {
-    channel = gRPC.Channel(address: address, secure: false)
+    channel = Channel(address: address, secure: false)
   }
 
   channel.host = host

  let serverRunningSemaphore = DispatchSemaphore(value: 0)

  // create the server
  var server: gRPC.Server!
  if useSSL {
    let certificateURL = URL(fileURLWithPath: "Tests/ssl.crt")
    let keyURL = URL(fileURLWithPath: "Tests/ssl.key")

    else {
      return
    }
    server = Server(address: address,
                    key: key,
                    certs: certificate)
  } else {
    server = Server(address: address)
  }

  // start the server
