See: Description
| Class | Description | 
|---|---|
| AddableParameterMap | Exposes an  HasAddableKeysobject as a put/get (no remove) map. | 
| CollectionUtil | Utilities for requests. | 
| HeaderValuesMap | Exposes an  EnumeratedValuesExtractorobject as a read-only map. | 
| KeySet | Exposes keys of a  HasKeysobject as a set. | 
| MapEntry<K,V> | Map.Entry implementation that can be constructed to either be read-only
 or not. | 
| MapEntryArrayValues<K,V> | Multi-valued map entry. | 
| ReadOnlyEnumerationMap<V> | Wraps an  HasKeysobject into a read-only map. | 
| RemovableKeySet | Wraps  HasRemovableKeyskeys as a set. | 
| ScopeMap | Exposes a scope context as a  | 
ScopeMap provides
 full get/put/remove access to the attributes.
 ReadOnlyEnumerationMap
 provides get-only access.
 HeaderValuesMap
 provides get-only access to a multi-valued map (typically, headers).
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