function(content) {
      this.waiting = false;
      if (typeof content !== 'undefined') {
        this.previous_content = this.content;
        this.content = content;
      }
      if (this.callbacks.length > 0) {
        this.then(this.callbacks.shift());
      }
    }
function(content) {
      this.waiting = false;
      if (typeof content !== 'undefined') {
        this.previous_content = this.content;
        this.content = content;
      }
      if (this.callbacks.length > 0) {
        this.then(this.callbacks.shift());
      }
    }
function ( content ) { this . waiting = false ; if ( typeof content !== 'undefined' ) { this . previous_content = this . content ; this . content = content ; } if ( this . callbacks . length > 0 ) { this . then ( this . callbacks . shift ( ) ) ; } }
Resume the queue, setting `content` to be used in the next operation. See `wait()` for an example.
Resume the queue setting content to be used in the next operation . See wait () for an example .