code: function findSubscribers( self, eventName ) {
     const subscribers = [];
     const parts = eventName.split( TOPIC_SEPARATOR );
     const node = self.subscriberTree_;
  
     findSubscribersRecursively( node, parts, subscribers );
     subscribers.sort( ( a, b ) => {
        const aWeight = a.subscriptionWeight;
        const bWeight = b.subscriptionWeight;
        if( aWeight[ 0 ] === bWeight[ 0 ] ) {
           return bWeight[ 1 ] - aWeight[ 1 ];
        }
  
        return bWeight[ 0 ] - aWeight[ 0 ];
     } );
  
     return subscribers;
  }
docs: ////////////////////////////////////////////////////////////////////////////////////////////////////////////