func (cluster *mongoCluster) Acquire() {
	cluster.Lock()
	cluster.references++
	debugf("Cluster %p acquired (refs=%d)", cluster, cluster.references)
	cluster.Unlock()
}
func (cluster *mongoCluster) Acquire() {
	cluster.Lock()
	cluster.references++
	debugf("Cluster %p acquired (refs=%d)", cluster, cluster.references)
	cluster.Unlock()
}
func ( cluster * mongoCluster ) Acquire ( ) { cluster . Lock ( ) cluster . references ++ debugf ( " " , cluster , cluster . references ) cluster . Unlock ( ) }
// Acquire increases the reference count for the cluster.
Acquire increases the reference count for the cluster .