addFontOptionsToPile(dstPile, srcPile) {
    for (let i = 0; i < srcPile.length; ++i) {
      this.addFontToPile(dstPile, srcPile[i]);
    }
  }
Add the font members of the passed list of option objects to the pile.
@param {Pile} dstPile  pile of option objects add to
@param {Pile} srcPile  pile of option objects to take font options from
@private