few comments added

src/main/java/org/redisson/Redisson.java

@@ -221,10 +221,24 @@ public class Redisson implements RedissonClient {
         return new RedissonSortedSet<V>(commandExecutor, name);
     }
 
+    /**
+     * Returns Redis Sorted Set instance by name
+     *
+     * @param name
+     * @return
+     */
     public <V> RScoredSortedSet<V> getScoredSortedSet(String name) {
         return new RedissonScoredSortedSet<V>(commandExecutor, name);
     }
 
+    /**
+     * Returns String based Redis Sorted Set instance by name
+     * All elements are inserted with the same score during addition,
+     * in order to force lexicographical ordering
+     *
+     * @param name
+     * @return
+     */
     public RLexSortedSet getLexSortedSet(String name) {
         return new RedissonLexSortedSet(commandExecutor, name);
     }

src/main/java/org/redisson/RedissonBatch.java

@@ -25,6 +25,7 @@ import org.redisson.core.RBucketAsync;
 import org.redisson.core.RDequeAsync;
 import org.redisson.core.RHyperLogLogAsync;
 import org.redisson.core.RKeysAsync;
+import org.redisson.core.RLexSortedSet;
 import org.redisson.core.RListAsync;
 import org.redisson.core.RMapAsync;
 import org.redisson.core.RQueueAsync;
@@ -98,6 +99,12 @@ public class RedissonBatch implements RBatch {
         return new RedissonScoredSortedSet<V>(executorService, name);
     }
 
+    @Override
+    public RLexSortedSet getLexSortedSet(String name) {
+        return new RedissonLexSortedSet(executorService, name);
+    }
+
+
     @Override
     public RScriptAsync getScript() {
         return new RedissonScript(executorService);

src/main/java/org/redisson/RedissonClient.java

@@ -106,8 +106,22 @@ public interface RedissonClient {
      */
     <V> RSortedSet<V> getSortedSet(String name);
 
+    /**
+     * Returns Redis Sorted Set instance by name
+     *
+     * @param name
+     * @return
+     */
     <V> RScoredSortedSet<V> getScoredSortedSet(String name);
 
+    /**
+     * Returns String based Redis Sorted Set instance by name
+     * All elements are inserted with the same score during addition,
+     * in order to force lexicographical ordering
+     *
+     * @param name
+     * @return
+     */
     RLexSortedSet getLexSortedSet(String name);
 
     /**

src/main/java/org/redisson/core/RBatch.java

@@ -113,8 +113,24 @@ public interface RBatch {
      */
     RAtomicLongAsync getAtomicLongAsync(String name);
 
+    /**
+     * Returns Redis Sorted Set instance by name
+     *
+     * @param name
+     * @return
+     */
     <V> RScoredSortedSet<V> getScoredSortedSet(String name);
 
+    /**
+     * Returns String based Redis Sorted Set instance by name
+     * All elements are inserted with the same score during addition,
+     * in order to force lexicographical ordering
+     *
+     * @param name
+     * @return
+     */
+    RLexSortedSet getLexSortedSet(String name);
+
     /**
      * Returns script operations object
      *