Optionalqueuingqueuing holds the configuration parameters for queuing. This field may be non-empty only if type is "Queue".
type is "Queue" or "Reject". "Queue" means that requests that can not be executed upon arrival are held in a queue until they can be executed or a queuing limit is reached. "Reject" means that requests that can not be executed upon arrival are rejected. Required.
LimitResponse defines how to handle requests that can not be executed right now.