Cannot get array property by using Parse JSON groovy

I'm new to Groovy. But, I can try with some simple code lines to extract the data.

I have read the from Parse JSON using groovy script (using JsonSlurper). But it didn't help in my case.

My code line:

{
  "errors": false,
  "address_data": [
    {
      "address_id": "567",
      "township": {
        "id": "41079",
        "name": "Test Data"
      },
      "city": {
        "id": "1622",
        "name": "Test City"
      },
      "region": {
        "id": "663",
        "name": "Metro Test"
      },
      "stock_source_code": "Test",
      "is_default_address": false
    },
    {
      "address_id": "45444",
      "township": {
        "id": "41079",
        "name": "Test Test"
      },
      "city": {
        "id": "1622",
        "name": "Test City"
      },
      "region": {
        "id": "663",
        "name": "Metro Test Taguig"
      },
      "is_default_address": true
    },
    {
      "address_id": "45444",
      "township": {
        "id": "888888",
        "name": "Apas"
      },
      "city": {
        "id": "432",
        "name": "Test City"
      },
      "region": {
        "id": "591",
        "name": "Test Cebu"
      },
      "stock_source_code": "testce",
      "is_default_address": false
    }
  ]
}

My code lines:

def response = "data_above";
def object = new JsonSlurper().parseText(response);
def errors = object.errors
if (errors == false) { //could access object.errors property
    log.info "Checking condition"
    def addressData = object.address_data // Cannot get the data
}

How can I get the address_data property?