Local maps can be used to share data safely in a single Vert.x instance.

The map only allows immutable keys and values in the map, OR certain mutable objects such as Buffer instances which will be copied when they are added to the map.

This ensures there is no shared access to mutable state from different threads (e.g. different event loops) in the Vert.x instance, and means you don't have to protect access to that state using synchronization or locks.

- `Anything`
  - `Object`
    - `Basic` ...and other supertypes
      - `LocalMap`

- `LocalMap`
  - `Basic`
    - `Identifiable`
    - `Object`
      - `Anything`

no subtypes hierarchy

Initializer
`LocalMap(LocalMap<out Object,out Object> unknown)`

Inherited Attributes
Attributes inherited from: `Object` `hash`, `string`

Methods
`clear` | `shared default void clear()` Clear all entries in the map
`close` | `shared default void close()` Close and release the map
`get` | `shared default V? get(K? key)` Get a value from the map Parameters: `key` the key
`isEmpty` | `shared default Boolean isEmpty()` @return true if there are zero entries in the map
`put` | `shared default V? put(K? key, V? value)` Put an entry in the map Parameters: `key` the key `value` the value
`putIfAbsent` | `shared default V? putIfAbsent(K? key, V? value)` Put the entry only if there is no existing entry for that key Parameters: `key` the key `value` the value
`remove` | `shared default V? remove(K? key)` Remove an entry from the map Parameters: `key` the key
`removeIfPresent` | `shared default Boolean removeIfPresent(K? key, V? value)` Remove the entry only if there is an entry with the specified key and value Parameters: `key` the key `value` the value
`replace` | `shared default V? replace(K? key, V? value)` Replace the entry only if there is an existing entry with the key Parameters: `key` the key `value` the new value
`replaceIfPresent` | `shared default Boolean replaceIfPresent(K? key, V? oldValue, V? newValue)` Replace the entry only if there is an existing entry with the specified key and value Parameters: `key` the key `oldValue` the old value `newValue` the new value
`size` | `shared default Integer size()` Get the size of the map

Inherited Methods
Methods inherited from: `Object` `equals`