```
public final class Utils
extends Object
```
Utility static methods, like Map get with default value, or elvis operator.

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <T,K> T`	`defaultGet(Map<K,T> map, K key, T defaultValue)`
`static int`	`messageId(io.netty.handler.codec.mqtt.MqttMessage msg)`
`static byte[]`	`readBytesAndRewind(io.netty.buffer.ByteBuf payload)`

public static <T,K> T defaultGet(Map<K,T> map,
                                       K key,
                                       T defaultValue)

public static int messageId(io.netty.handler.codec.mqtt.MqttMessage msg)

public static byte[] readBytesAndRewind(io.netty.buffer.ByteBuf payload)

Class Utils