- updates unit test to match new nullbility annotations

Author: baywet

src/test/java/com/microsoft/graph/telemetry/VersionHeader.java

@@ -14,7 +14,7 @@
 public class VersionHeader {
     @Test
     public void testHeader() {
-        final BaseRequest<Void> request = new BaseRequest<Void>("https://a.b.c/", GraphServiceClient.builder().authenticationProvider(mock(IAuthenticationProvider.class)).buildClient(), null, null){};
+        final BaseRequest<Void> request = new BaseRequest<Void>("https://a.b.c/", GraphServiceClient.builder().authenticationProvider(mock(IAuthenticationProvider.class)).buildClient(), null, Void.class){};
         assertEquals(1, request.getHeaders().size());
         assertEquals("SdkVersion", request.getHeaders().get(0).getName());
         assertEquals(String.format(BaseRequest.REQUEST_STATS_HEADER_VALUE_FORMAT_STRING, Constants.VERSION_NAME), request.getHeaders().get(0).getValue());