[
  {
    "constant": true,
    "inputs": [
      {
        "name": "at",
        "type": "address"
      },
      {
        "name": "loudly",
        "type": "bool"
      }
    ],
    "name": "bark",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },

  {
    "constant": true,
    "inputs": [],
    "name": "rollover",
    "outputs": [
      {
        "name": "is_a_good_boy",
        "type": "bool"
      }
    ],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  }
]