{
  "feature": "minecraft:firefly_bush",
  "placement": [
    {
      "type": "minecraft:count",
      "count": 3
    },
    {
      "type": "minecraft:in_square"
    },
    {
      "type": "minecraft:heightmap",
      "heightmap": "MOTION_BLOCKING"
    },
    {
      "type": "minecraft:biome"
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:all_of",
        "predicates": [
          {
            "type": "minecraft:matching_block_tag",
            "tag": "minecraft:air"
          },
          {
            "type": "minecraft:would_survive",
            "state": "minecraft:firefly_bush"
          },
          {
            "type": "minecraft:any_of",
            "predicates": [
              {
                "type": "minecraft:matching_fluids",
                "fluids": [
                  "minecraft:water",
                  "minecraft:flowing_water"
                ],
                "offset": [
                  1,
                  -1,
                  0
                ]
              },
              {
                "type": "minecraft:matching_fluids",
                "fluids": [
                  "minecraft:water",
                  "minecraft:flowing_water"
                ],
                "offset": [
                  -1,
                  -1,
                  0
                ]
              },
              {
                "type": "minecraft:matching_fluids",
                "fluids": [
                  "minecraft:water",
                  "minecraft:flowing_water"
                ],
                "offset": [
                  0,
                  -1,
                  1
                ]
              },
              {
                "type": "minecraft:matching_fluids",
                "fluids": [
                  "minecraft:water",
                  "minecraft:flowing_water"
                ],
                "offset": [
                  0,
                  -1,
                  -1
                ]
              }
            ]
          }
        ]
      }
    },
    {
      "type": "minecraft:count",
      "count": 20
    },
    {
      "type": "minecraft:offset",
      "x": {
        "type": "minecraft:trapezoid",
        "max": 4,
        "min": -4,
        "plateau": 0
      },
      "y": {
        "type": "minecraft:trapezoid",
        "max": 3,
        "min": -3,
        "plateau": 0
      },
      "z": {
        "type": "minecraft:trapezoid",
        "max": 4,
        "min": -4,
        "plateau": 0
      }
    },
    {
      "type": "minecraft:block_predicate_filter",
      "predicate": {
        "type": "minecraft:matching_block_tag",
        "tag": "minecraft:air"
      }
    }
  ]
}