HarvestVein
      (ctor) HarvestVein( double veinChance, double chanceToFallback, HarvestResource primaryResource, HarvestResource fallbackResource )
      double ChanceToFallback( get; set; )
      HarvestResource FallbackResource( get; set; )
      HarvestResource PrimaryResource( get; set; )
      double VeinChance( get; set; )