Example:

data/minecraft/worldgen/density_function/overworld/sloped_cheese.json

{
    "type": "minecraft:log",
    "name": "Sloped Cheese",
    "argument": {
  "type": "minecraft:add",
  "argument1": {
    "type": "minecraft:mul",
    "argument1": 4.0,
    "argument2": {
      "type": "minecraft:quarter_negative",
      "argument": {
        "type": "minecraft:mul",
        "argument1": {
          "type": "minecraft:add",
          "argument1": "minecraft:overworld/depth",
          "argument2": {
            "type": "minecraft:mul",
            "argument1": "minecraft:overworld/jaggedness",
            "argument2": {
              "type": "minecraft:half_negative",
              "argument": {
                "type": "minecraft:noise",
                "noise": "minecraft:jagged",
                "xz_scale": 1500.0,
                "y_scale": 0.0
              }
            }
          }
        },
        "argument2": "minecraft:overworld/factor"
      }
    }
  },
  "argument2": "minecraft:overworld/base_3d_noise"
}}