Moved WebExchangeDataBinder to web.bind.support (alongside WebRequestDataBinder)

Issue: SPR-14542

spring-web/src/test/java/org/springframework/http/codec/EncoderHttpMessageWriterTests.java

@@ -13,12 +13,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.codec;
 
 import java.nio.ByteBuffer;
 import java.util.Collections;
 
-import org.jetbrains.annotations.NotNull;
 import org.junit.Test;
 import reactor.core.publisher.Mono;
 import reactor.test.StepVerifier;
@@ -40,7 +40,7 @@ import static org.junit.Assert.*;
  * @author Marcin Kamionowski
  * @author Rossen Stoyanchev
  */
-public class EncoderHttpMessageWriterTest {
+public class EncoderHttpMessageWriterTests {
 
 	private MockServerHttpResponse response = new MockServerHttpResponse();
 
@@ -74,7 +74,6 @@ public class EncoderHttpMessageWriterTest {
 				.verify();
 	}
 
-	@NotNull
 	private <T> EncoderHttpMessageWriter<T> createWriter(Encoder<T> encoder) {
 		return new EncoderHttpMessageWriter<>(encoder);
 	}

spring-web/src/test/java/org/springframework/http/server/reactive/bootstrap/JettyHttpServer.java

@@ -20,7 +20,6 @@ import org.eclipse.jetty.server.Server;
 import org.eclipse.jetty.server.ServerConnector;
 import org.eclipse.jetty.servlet.ServletContextHandler;
 import org.eclipse.jetty.servlet.ServletHolder;
-import org.jetbrains.annotations.NotNull;
 
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.http.server.reactive.ServletHttpHandlerAdapter;
@@ -52,7 +51,6 @@ public class JettyHttpServer extends HttpServerSupport implements HttpServer, In
 		this.jettyServer.addConnector(connector);
 	}
 
-	@NotNull
 	private ServletHttpHandlerAdapter initServletHttpHandlerAdapter() {
 		if (getHttpHandlerMap() != null) {
 			return new ServletHttpHandlerAdapter(getHttpHandlerMap());

spring-web/src/test/java/org/springframework/http/server/reactive/bootstrap/TomcatHttpServer.java

@@ -21,7 +21,6 @@ import java.io.File;
 import org.apache.catalina.Context;
 import org.apache.catalina.LifecycleException;
 import org.apache.catalina.startup.Tomcat;
-import org.jetbrains.annotations.NotNull;
 
 import org.springframework.beans.factory.InitializingBean;
 import org.springframework.http.server.reactive.ServletHttpHandlerAdapter;
@@ -64,7 +63,6 @@ public class TomcatHttpServer extends HttpServerSupport implements HttpServer, I
 		rootContext.addServletMappingDecoded("/", "httpHandlerServlet");
 	}
 
-	@NotNull
 	private ServletHttpHandlerAdapter initServletHttpHandlerAdapter() {
 		if (getHttpHandlerMap() != null) {
 			return new ServletHttpHandlerAdapter(getHttpHandlerMap());

spring-web/src/test/java/org/springframework/web/bind/support/WebExchangeDataBinderTests.java

@@ -13,14 +13,14 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package org.springframework.web.bind;
+
+package org.springframework.web.bind.support;
 
 import java.beans.PropertyEditorSupport;
 import java.io.UnsupportedEncodingException;
 import java.net.URLEncoder;
 import java.util.Iterator;
 
-import org.jetbrains.annotations.NotNull;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -227,7 +227,6 @@ public class WebExchangeDataBinderTests {
 		return builder.toString();
 	}
 
-	@NotNull
 	private ServerWebExchange createExchange() {
 		return new DefaultServerWebExchange(
 				this.request, new MockServerHttpResponse(), new DefaultWebSessionManager());