refactoring

redisson/src/main/java/org/redisson/RedissonBinaryStream.java

@@ -15,30 +15,26 @@
  */
 package org.redisson;
 
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.nio.ByteBuffer;
-import java.nio.channels.AsynchronousByteChannel;
-import java.nio.channels.CompletionHandler;
-import java.nio.channels.SeekableByteChannel;
-import java.util.Arrays;
-import java.util.concurrent.Future;
-
+import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import org.redisson.api.RBinaryStream;
 import org.redisson.api.RFuture;
 import org.redisson.client.codec.ByteArrayCodec;
 import org.redisson.client.codec.LongCodec;
-import org.redisson.client.handler.State;
-import org.redisson.client.protocol.Decoder;
-import org.redisson.client.protocol.RedisCommand;
 import org.redisson.client.protocol.RedisCommands;
 import org.redisson.command.CommandAsyncExecutor;
 import org.redisson.misc.RPromise;
 import org.redisson.misc.RedissonPromise;
 
-import io.netty.buffer.ByteBuf;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.ByteBuffer;
+import java.nio.channels.AsynchronousByteChannel;
+import java.nio.channels.CompletionHandler;
+import java.nio.channels.SeekableByteChannel;
+import java.util.Arrays;
+import java.util.concurrent.Future;
 
 /**
  *