Snow Double Slab

{
  "type": "minecraft:block",
  "pools": [
    {
      "rolls": 1,
      "bonus_rolls": 0,
      "entries": [
        {
          "type": "minecraft:item",
          "name": "minecraft:stone_slab",
          "functions": [
            {
              "function": "minecraft:set_count",
              "count": 2,
              "add": false,
              "conditions": [
                {
                  "condition": "minecraft:block_state_property",
                  "block": "minecraft:stone_slab",
                  "properties": {
                    "type": "double"
                  }
                }
              ]
            },
            {
              "function": "minecraft:explosion_decay"
            }
          ]
        },
        {
          "type": "minecraft:alternatives",
          "children": [
            {
              "type": "minecraft:item",
              "name": "minecraft:snow_block",
              "conditions": [
                {
                  "condition": "minecraft:match_tool",
                  "predicate": {
                    "enchantments": [
                      {
                        "enchantment": "minecraft:silk_touch",
                        "levels": {
                          "min": 1
                        }
                      }
                    ]
                  }
                }
              ]
            },
            {
              "type": "minecraft:item",
              "name": "minecraft:snowball",
              "functions": [
                {
                  "function": "minecraft:set_count",
                  "count": 4,
                  "add": false
                },
                {
                  "function": "minecraft:explosion_decay"
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}