static/js/org/cytoscape.js
function( map ){
      var empty = true;

      if( map != null ){
        for(var i in map){
          empty = false;
          break;
        }
      }

      return empty;
    }
function( map ){
      var empty = true;

      if( map != null ){
        for(var i in map){
          empty = false;
          break;
        }
      }

      return empty;
    }
function ( map ) { var empty = true ; if ( map != null ) { for ( var i in map ) { empty = false ; break ; } } return empty ; }
has anything been set in the map
has anything been set in the map