private void scheduleInternalOperation(
        String name,
        TopicPartition tp,
        Runnable op
    ) {
        log.debug("Scheduled execution of internal operation {}.", name);
        enqueueLast(new CoordinatorInternalEvent(name, tp, op));
    }
Schedules an internal event.

@param name  The name of the write operation.
@param tp    The address of the coordinator (aka its topic-partitions).
@param op    The operation.
group-coordinator/src/main/java/org/apache/kafka/coordinator/group/runtime/CoordinatorRuntime.java