AttributeMap (Netty/Common 4.2.0.Alpha1 API)

All Known Implementing Classes:

DefaultAttributeMap
```
public interface AttributeMap
```
Holds Attributes which can be accessed via AttributeKey. Implementations must be Thread-safe.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`<T> Attribute<T>`	`attr(AttributeKey<T> key)`	Get the `Attribute` for the given `AttributeKey`.
`<T> boolean`	`hasAttr(AttributeKey<T> key)`	Returns `true` if and only if the given `Attribute` exists in this `AttributeMap`.

- Method Detail
  - attr
```
<T> Attribute<T> attr(AttributeKey<T> key)
```
    Get the Attribute for the given AttributeKey. This method will never return null, but may return an Attribute which does not have a value set yet.
  - hasAttr
```
<T> boolean hasAttr(AttributeKey<T> key)
```
    Returns true if and only if the given Attribute exists in this AttributeMap.