You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mem_queue_processor.go
    path of file: ./repos/cockroach/pkg/obsservice/obslib/process
    
    the code of the file until where you have to start completion: // Copyright 2023 The Cockroach Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the Li
    
func (p *MemQueueProcessor[T]) Start(ctx context.Context, stop *stop.Stopper) error {
	return stop.RunAsyncTask(ctx,
		fmt.Sprintf("MemQueueProcessor{%s}", p.queue.Alias()),
		func(ctx context.Context) {
			for {
				select {
				case <-stop.ShouldQuiesce():
					// The producer for the MemQueue that we're consuming from is expected to be a gRPC server, which
					// should be using the same stop.Stopper. Therefore, once we're signaled to quiesce, the queue should
					// soon stop growing in size. Drain what's left before exiting.
					log.Infof(ctx, "MemQueueProcessor{%s} shutdown requested, draining with timeout", p.queue.Alias())
					p.drain(ctx)
					return
				default:
					// NB: If the queue is empty, this method is considered "busy-waiting", which is CPU-intensive.
					// Consider a more efficient consumption model if used long term.
					if e, ok := p.queue.Dequeue(); ok {
						if err := p.processor.Process(ctx, e); err != nil {
							log.Errorf(ctx, "MemQueueProcessor{%s} processing error: %v", p.queue.Alias(), err)
						}
					}
				}
			}
		})
}