Polishing.

Add since tag.

See gh-907
Original pull request: gh-908

Author: mp911de

spring-vault-core/src/main/java/org/springframework/vault/client/ClientHttpRequestFactoryFactory.java

@@ -15,6 +15,17 @@
  */
 package org.springframework.vault.client;
 
+import javax.net.ssl.KeyManager;
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.KeyManagerFactorySpi;
+import javax.net.ssl.ManagerFactoryParameters;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.SSLEngine;
+import javax.net.ssl.TrustManager;
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509ExtendedKeyManager;
+import javax.net.ssl.X509TrustManager;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.ProxySelector;
@@ -31,18 +42,6 @@
 import java.util.Arrays;
 import java.util.List;
 import java.util.concurrent.TimeUnit;
-
-import javax.net.ssl.KeyManager;
-import javax.net.ssl.KeyManagerFactory;
-import javax.net.ssl.KeyManagerFactorySpi;
-import javax.net.ssl.ManagerFactoryParameters;
-import javax.net.ssl.SSLContext;
-import javax.net.ssl.SSLEngine;
-import javax.net.ssl.TrustManager;
-import javax.net.ssl.TrustManagerFactory;
-import javax.net.ssl.X509ExtendedKeyManager;
-import javax.net.ssl.X509TrustManager;
-
 import okhttp3.ConnectionSpec;
 import okhttp3.OkHttpClient.Builder;
 import org.apache.commons.logging.Log;
@@ -423,6 +422,7 @@ public static Builder getBuilder(ClientOptions options, SslConfiguration sslConf
 	 * {@link SimpleClientHttpRequestFactory}.
 	 *
 	 * @author Luciano Canales
+	 * @since 3.1.3
 	 */
 	public static class SimpleClient {