/**
* Gets metadata for this request cycle using the given key.
*
* @param <T> The type of the metadata
* @param key The key for the data
* @return The metadata or null if no metadata was found for the given key
* @see MetaDataKey
*/
public <T> T getMetaData(final MetaDataKey<T> key) {
return key.get(metaData);
}
/**
* Sets the metadata for this request cycle using the given key. If the metadata object is not of
* the correct type for the metadata key, an IllegalArgumentException will be thrown. For
* information on creating MetaDataKeys, see {@link MetaDataKey}.
*
* @param key The singleton key for the metadata
* @param object The metadata object
* @param <T>
* @throws IllegalArgumentException
* @see MetaDataKey
*/
public <T> void setMetaData(final MetaDataKey<T> key, final T object) {
metaData = key.set(metaData, object);
}