<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_total_size_of_queued_replicas():
 """Return the total number of bytes of requested, unprocessed replicas."""

    return (
        d1_gmn.app.models.ReplicationQueue.objects.filter(
            local_replica__info__status__status='queued'
        ).aggregate(Sum('size'))['size__sum']
        or 0
    )