migrate from client side interface to client side abstract class

src/csharp/Grpc.Examples.MathClient/MathClient.cs

@@ -40,7 +40,7 @@ namespace Math
         public static void Main(string[] args)
         {
             var channel = new Channel("127.0.0.1", 23456, ChannelCredentials.Insecure);
-            Math.IMathClient client = new Math.MathClient(channel);
+            Math.MathClientBase client = new Math.MathClient(channel);
             MathExamples.DivExample(client);
 
             MathExamples.DivAsyncExample(client).Wait();

src/csharp/Grpc.Examples/MathExamples.cs

@@ -38,19 +38,19 @@ namespace Math
 {
     public static class MathExamples
     {
-        public static void DivExample(Math.IMathClient client)
+        public static void DivExample(Math.MathClientBase client)
         {
             DivReply result = client.Div(new DivArgs { Dividend = 10, Divisor = 3 });
             Console.WriteLine("Div Result: " + result);
         }
 
-        public static async Task DivAsyncExample(Math.IMathClient client)
+        public static async Task DivAsyncExample(Math.MathClientBase client)
         {
             DivReply result = await client.DivAsync(new DivArgs { Dividend = 4, Divisor = 5 });
             Console.WriteLine("DivAsync Result: " + result);
         }
 
-        public static async Task FibExample(Math.IMathClient client)
+        public static async Task FibExample(Math.MathClientBase client)
         {
             using (var call = client.Fib(new FibArgs { Limit = 5 }))
             {
@@ -59,7 +59,7 @@ namespace Math
             }
         }
 
-        public static async Task SumExample(Math.IMathClient client)
+        public static async Task SumExample(Math.MathClientBase client)
         {
             var numbers = new List<Num>
             {
@@ -75,7 +75,7 @@ namespace Math
             }
         }
 
-        public static async Task DivManyExample(Math.IMathClient client)
+        public static async Task DivManyExample(Math.MathClientBase client)
         {
             var divArgsList = new List<DivArgs>
             {
@@ -90,7 +90,7 @@ namespace Math
             }
         }
 
-        public static async Task DependendRequestsExample(Math.IMathClient client)
+        public static async Task DependendRequestsExample(Math.MathClientBase client)
         {
             var numbers = new List<Num>
             {

src/csharp/Grpc.HealthCheck.Tests/HealthClientServerTest.cs

@@ -49,7 +49,7 @@ namespace Grpc.HealthCheck.Tests
         const string Host = "localhost";
         Server server;
         Channel channel;
-        Grpc.Health.V1.Health.IHealthClient client;
+        Grpc.Health.V1.Health.HealthClientBase client;
         Grpc.HealthCheck.HealthServiceImpl serviceImpl;
 
         [TestFixtureSetUp]

src/csharp/Grpc.IntegrationTesting/ClientRunners.cs

@@ -112,7 +112,7 @@ namespace Grpc.IntegrationTesting
         readonly PayloadConfig payloadConfig;
         readonly Histogram histogram;
 
-        readonly BenchmarkService.IBenchmarkServiceClient client;
+        readonly BenchmarkService.BenchmarkServiceClientBase client;
         readonly Task runnerTask;
         readonly CancellationTokenSource stoppedCts;
         readonly WallClockStopwatch wallClockStopwatch = new WallClockStopwatch();

src/csharp/Grpc.IntegrationTesting/InteropClient.cs

@@ -217,7 +217,7 @@ namespace Grpc.IntegrationTesting
             }
         }
 
-        public static void RunEmptyUnary(TestService.ITestServiceClient client)
+        public static void RunEmptyUnary(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running empty_unary");
             var response = client.EmptyCall(new Empty());
@@ -225,7 +225,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static void RunLargeUnary(TestService.ITestServiceClient client)
+        public static void RunLargeUnary(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running large_unary");
             var request = new SimpleRequest
@@ -241,7 +241,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunClientStreamingAsync(TestService.ITestServiceClient client)
+        public static async Task RunClientStreamingAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running client_streaming");
 
@@ -257,7 +257,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunServerStreamingAsync(TestService.ITestServiceClient client)
+        public static async Task RunServerStreamingAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running server_streaming");
 
@@ -281,7 +281,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunPingPongAsync(TestService.ITestServiceClient client)
+        public static async Task RunPingPongAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running ping_pong");
 
@@ -338,7 +338,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunEmptyStreamAsync(TestService.ITestServiceClient client)
+        public static async Task RunEmptyStreamAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running empty_stream");
             using (var call = client.FullDuplexCall())
@@ -434,7 +434,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunCancelAfterBeginAsync(TestService.ITestServiceClient client)
+        public static async Task RunCancelAfterBeginAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running cancel_after_begin");
 
@@ -451,7 +451,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunCancelAfterFirstResponseAsync(TestService.ITestServiceClient client)
+        public static async Task RunCancelAfterFirstResponseAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running cancel_after_first_response");
 
@@ -477,7 +477,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunTimeoutOnSleepingServerAsync(TestService.ITestServiceClient client)
+        public static async Task RunTimeoutOnSleepingServerAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running timeout_on_sleeping_server");
 
@@ -499,7 +499,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunCustomMetadataAsync(TestService.ITestServiceClient client)
+        public static async Task RunCustomMetadataAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running custom_metadata");
             {
@@ -546,7 +546,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static async Task RunStatusCodeAndMessageAsync(TestService.ITestServiceClient client)
+        public static async Task RunStatusCodeAndMessageAsync(TestService.TestServiceClientBase client)
         {
             Console.WriteLine("running status_code_and_message");
             var echoStatus = new EchoStatus
@@ -580,7 +580,7 @@ namespace Grpc.IntegrationTesting
             Console.WriteLine("Passed!");
         }
 
-        public static void RunUnimplementedMethod(UnimplementedService.IUnimplementedServiceClient client)
+        public static void RunUnimplementedMethod(UnimplementedService.UnimplementedServiceClientBase client)
         {
             Console.WriteLine("running unimplemented_method");
             var e = Assert.Throws<RpcException>(() => client.UnimplementedCall(new Empty()));

src/csharp/Grpc.IntegrationTesting/InteropClientServerTest.cs

@@ -51,7 +51,7 @@ namespace Grpc.IntegrationTesting
         const string Host = "localhost";
         Server server;
         Channel channel;
-        TestService.ITestServiceClient client;
+        TestService.TestServiceClientBase client;
 
         [TestFixtureSetUp]
         public void Init()

src/csharp/Grpc.IntegrationTesting/MetadataCredentialsTest.cs

@@ -50,15 +50,15 @@ namespace Grpc.IntegrationTesting
         const string Host = "localhost";
         Server server;
         Channel channel;
-        TestService.ITestServiceClient client;
+        TestService.TestServiceClient client;
         List<ChannelOption> options;
-        Mock<TestService.ITestService> serviceMock;
+        Mock<TestService.TestServiceBase> serviceMock;
         AsyncAuthInterceptor asyncAuthInterceptor;
 
         [SetUp]
         public void Init()
         {
-            serviceMock = new Mock<TestService.ITestService>();
+            serviceMock = new Mock<TestService.TestServiceBase>();
             serviceMock.Setup(m => m.UnaryCall(It.IsAny<SimpleRequest>(), It.IsAny<ServerCallContext>()))
                 .Returns(new Func<SimpleRequest, ServerCallContext, Task<SimpleResponse>>(UnaryCallHandler));
 

src/csharp/Grpc.IntegrationTesting/SslCredentialsTest.cs

@@ -53,7 +53,7 @@ namespace Grpc.IntegrationTesting
         const string Host = "localhost";
         Server server;
         Channel channel;
-        TestService.ITestServiceClient client;
+        TestService.TestServiceClientBase client;
 
         [TestFixtureSetUp]
         public void Init()