Config.use** methods with config param added

src/main/java/org/redisson/Config.java

@@ -80,10 +80,9 @@ public class Config {
     }
 
     /**
-     * Redis key/value codec. Default is json
+     * Redis key/value codec. Default is json-codec
      *
-     * @see org.redisson.codec.JsonJacksonCodec
-     * @see org.redisson.codec.SerializationCodec
+     * @see org.redisson.client.codec.Codec
      */
     public Config setCodec(Codec codec) {
         this.codec = codec;
@@ -93,18 +92,33 @@ public class Config {
         return codec;
     }
 
+    /**
+     * Init cluster servers configuration
+     *
+     * @return
+     */
     public ClusterServersConfig useClusterServers() {
+        return useClusterServers(new ClusterServersConfig());
+    }
+
+    /**
+     * Init cluster servers configuration by config object.
+     *
+     * @return
+     */
+    public ClusterServersConfig useClusterServers(ClusterServersConfig config) {
         checkMasterSlaveServersConfig();
         checkSentinelServersConfig();
         checkSingleServerConfig();
         checkElasticacheServersConfig();
 
         if (clusterServersConfig == null) {
-            clusterServersConfig = new ClusterServersConfig();
+            clusterServersConfig = config;
         }
         return clusterServersConfig;
     }
 
+
     ClusterServersConfig getClusterServersConfig() {
         return clusterServersConfig;
     }
@@ -112,7 +126,21 @@ public class Config {
         this.clusterServersConfig = clusterServersConfig;
     }
 
+    /**
+     * Init AWS Elasticache servers configuration.
+     *
+     * @return
+     */
     public ElasticacheServersConfig useElasticacheServers() {
+        return useElasticacheServers(new ElasticacheServersConfig());
+    }
+
+    /**
+     * Init AWS Elasticache servers configuration by config object.
+     *
+     * @return
+     */
+    public ElasticacheServersConfig useElasticacheServers(ElasticacheServersConfig config) {
         checkClusterServersConfig();
         checkMasterSlaveServersConfig();
         checkSentinelServersConfig();
@@ -131,18 +159,33 @@ public class Config {
         this.elasticacheServersConfig = elasticacheServersConfig;
     }
 
+    /**
+     * Init single server configuration.
+     *
+     * @return
+     */
     public SingleServerConfig useSingleServer() {
+        return useSingleServer(new SingleServerConfig());
+    }
+
+    /**
+     * Init single server configuration by config object.
+     *
+     * @return
+     */
+    public SingleServerConfig useSingleServer(SingleServerConfig config) {
         checkClusterServersConfig();
         checkMasterSlaveServersConfig();
         checkSentinelServersConfig();
         checkElasticacheServersConfig();
 
         if (singleServerConfig == null) {
-            singleServerConfig = new SingleServerConfig();
+            singleServerConfig = config;
         }
         return singleServerConfig;
     }
 
+
     SingleServerConfig getSingleServerConfig() {
         return singleServerConfig;
     }
@@ -150,16 +193,30 @@ public class Config {
         this.singleServerConfig = singleConnectionConfig;
     }
 
+    /**
+     * Init sentinel servers configuration.
+     *
+     * @return
+     */
     public SentinelServersConfig useSentinelServers() {
+        return useSentinelServers(new SentinelServersConfig());
+    }
+
+    /**
+     * Init sentinel servers configuration by config object.
+     *
+     * @return
+     */
+    public SentinelServersConfig useSentinelServers(SentinelServersConfig sentinelServersConfig) {
         checkClusterServersConfig();
         checkSingleServerConfig();
         checkMasterSlaveServersConfig();
         checkElasticacheServersConfig();
 
-        if (sentinelServersConfig == null) {
-            sentinelServersConfig = new SentinelServersConfig();
+        if (this.sentinelServersConfig == null) {
+            this.sentinelServersConfig = sentinelServersConfig;
         }
-        return sentinelServersConfig;
+        return this.sentinelServersConfig;
     }
 
     /**
@@ -177,14 +234,28 @@ public class Config {
         this.sentinelServersConfig = sentinelConnectionConfig;
     }
 
+    /**
+     * Init master/slave servers configuration.
+     *
+     * @return
+     */
     public MasterSlaveServersConfig useMasterSlaveServers() {
+        return useMasterSlaveServers(new MasterSlaveServersConfig());
+    }
+
+    /**
+     * Init master/slave servers configuration by config object.
+     *
+     * @return
+     */
+    public MasterSlaveServersConfig useMasterSlaveServers(MasterSlaveServersConfig config) {
         checkClusterServersConfig();
         checkSingleServerConfig();
         checkSentinelServersConfig();
         checkElasticacheServersConfig();
 
         if (masterSlaveServersConfig == null) {
-            masterSlaveServersConfig = new MasterSlaveServersConfig();
+            masterSlaveServersConfig = config;
         }
         return masterSlaveServersConfig;
     }