AttributeKey

An optional, brief description of the key.

In environments that support delegation, looking up this key when it has no associated value will delegate to the values associated with these keys. The delegation proceeds in order the keys are returned here.

Specifies whether this key is a local, anonymous key (true) or not (false). This is typically only used for programmatic, intermediate keys that should not be referenced outside of a specific scope.

The label is the identifier for the key and is camelCase by convention.

Identifies the relative importance of a key among other keys.

The runtime evidence for A.