@FunctionalInterface
public interface GeneratedDispatcher.Arity1 Array-free companion for targets taking exactly one value beyond the receiver.
A separate single-method interface so each table is adapted by one
LambdaMetafactory linkage.
Invokes the target registered under id whose captured-plus-argument
count is exactly one.
id - the compile-time-assigned index of the targetowner - the receiver (ignored by static targets)a - the single captured value or call argument