javadocs fixed

redisson/src/main/java/org/redisson/api/RScoredSortedSet.java

@@ -145,19 +145,18 @@ public interface RScoredSortedSet<V> extends RScoredSortedSetAsync<V>, Iterable<
     V pollLast(long timeout, TimeUnit unit);
     
     /**
-     * Removes and returns the head elements or {@code null} if this sorted set is empty.
+     * Removes and returns the head elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the head element, 
-     *         or {@code null} if this sorted set is empty
+     * @return the head elements of this sorted set
      */
     Collection<V> pollFirst(int count);
 
     /**
-     * Removes and returns the tail elements or {@code null} if this sorted set is empty.
+     * Removes and returns the tail elements of this sorted set.
      * 
      * @param count - elements amount
-     * @return the tail element or {@code null} if this sorted set is empty
+     * @return the tail elements of this sorted set
      */
     Collection<V> pollLast(int count);
     

redisson/src/main/java/org/redisson/api/RScoredSortedSetAsync.java

@@ -106,18 +106,18 @@ public interface RScoredSortedSetAsync<V> extends RExpirableAsync, RSortableAsyn
     RFuture<V> pollLastAsync(long timeout, TimeUnit unit);
     
     /**
-     * Removes and returns the head elements or {@code null} if this sorted set is empty.
+     * Removes and returns the head elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the head elements
+     * @return the head elements of this sorted set
      */
     RFuture<Collection<V>> pollFirstAsync(int count);
 
     /**
-     * Removes and returns the tail elements or {@code null} if this sorted set is empty.
+     * Removes and returns the tail elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the tail elements
+     * @return the tail elements of this sorted set
      */
     RFuture<Collection<V>> pollLastAsync(int count);
 

redisson/src/main/java/org/redisson/api/RScoredSortedSetReactive.java

@@ -96,18 +96,18 @@ public interface RScoredSortedSetReactive<V> extends RExpirableReactive, RSortab
     Mono<V> pollLast(long timeout, TimeUnit unit);
     
     /**
-     * Removes and returns the head elements or {@code null} if this sorted set is empty.
+     * Removes and returns the head elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the head elements
+     * @return the head elements of this sorted set
      */
     Mono<Collection<V>> pollFirst(int count);
 
     /**
-     * Removes and returns the tail elements or {@code null} if this sorted set is empty.
+     * Removes and returns the tail elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the tail elements
+     * @return the tail elements of this sorted set
      */
     Mono<Collection<V>> pollLast(int count);
 

redisson/src/main/java/org/redisson/api/RScoredSortedSetRx.java

@@ -97,18 +97,18 @@ public interface RScoredSortedSetRx<V> extends RExpirableRx, RSortableRx<Set<V>>
     Maybe<V> pollLast(long timeout, TimeUnit unit);
     
     /**
-     * Removes and returns the head elements or {@code null} if this sorted set is empty.
+     * Removes and returns the head elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the head elements
+     * @return the head elements of this sorted set
      */
     Single<Collection<V>> pollFirst(int count);
 
     /**
-     * Removes and returns the tail elements or {@code null} if this sorted set is empty.
+     * Removes and returns the tail elements of this sorted set.
      *
      * @param count - elements amount
-     * @return the tail elements
+     * @return the tail elements of this sorted set
      */
     Single<Collection<V>> pollLast(int count);