UnboundedStablePriorityMailbox is an unbounded mailbox that allows for prioritization of its contents. Unlike the
UnboundedPriorityMailbox it preserves ordering for messages of equal priority.
Extend this class and provide the Comparator in the constructor.
UnboundedStablePriorityMailbox is an unbounded mailbox that allows for prioritization of its contents. Unlike the UnboundedPriorityMailbox it preserves ordering for messages of equal priority. Extend this class and provide the Comparator in the constructor.