_setPositionOfChevronSprite(chevronSprite, chevronIndex, numChevrons) {
    const chevronSpacing = 1.05;
    chevronSprite.setPositionAboveSprite(this._rankedChevronPlateSprite, null, cc.p((chevronIndex - (numChevrons - 1) * 0.5) * chevronSpacing, -0.3));
  }
Set Chevron position
@private
@param cc.Sprite chevronSprite - sprite to be positioned
@param integer chevronIndex - Index position of chevron
@param integer numChevrons - number of chevrons being shown