waitUntilResolved() {
      return new Promise(( resolve ) => {
        let counter = 0;
        const interval = setInterval(() => {
          if ( counter++ > 80 || bs.network.resolved ) {
            clearInterval( interval );
            return resolve();
          }
        }, 50 );
      });
    }
If requested came, but the body isn't resolved yet
@returns {Promise}