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          "betternether": {
            "firefly": {
              "weight [default: 5]": 5,
              "minGroupSize [default: 1]": 1,
              "maxGroupSize [default: 3]": 3
            },
            "hydrogen_jellyfish": {
              "weight [default: 5]": 5,
              "minGroupSize [default: 2]": 2,
              "maxGroupSize [default: 6]": 6
            }
          }
        },
        "monster": {
          "betternether": {
            "naga": {
              "weight [default: 8]": 8,
              "minGroupSize [default: 3]": 3,
              "maxGroupSize [default: 5]": 5
            }
          }
        }
      }
    }
  }
}