func AnyClusters() bool {
	clustersUsingAppLock.RLock()
	defer clustersUsingAppLock.RUnlock()
	return (len(clustersUsingApp) != 0)
}
AnyClusters returns true if any clusters have been registered.
package shared
import (
	"sync"
)
var (
	clustersUsingApp     map[string][]string
	clustersUsingAppLock sync.RWMutex
)
func init() {
	clustersUsingApp = make(map[string][]string)
}