func SetClients(clis *clients.Clients) {
	clientPool = clis
}
SetClients sets a pool of clients for passing into OnPoll
package polling
import (
	"runtime/debug"
	"sync"
	"time"
	"github.com/matrix-org/go-neb/clients"
	"github.com/matrix-org/go-neb/database"
	"github.com/matrix-org/go-neb/types"
	log "github.com/sirupsen/logrus"
)
var (
	pollMutex     sync.Mutex
	startPollTime = make(map[string]int64)  
)
var clientPool *clients.Clients