{

"ResourceSpecificationVersion": "1.0.0",
"ResourceType": {
  "AWS::EC2::VPC": {
    "Attributes": {
      "CidrBlock": {
        "PrimitiveType": "String"
      },
      "DefaultNetworkAcl": {
        "PrimitiveType": "String"
      },
      "DefaultSecurityGroup": {
        "PrimitiveType": "String"
      }
    },
    "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc.html",
    "Properties": {
      "CidrBlock": {
        "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc.html#cfn-aws-ec2-vpc-cidrblock",
        "PrimitiveType": "String",
        "Required": true,
        "UpdateType": "Immutable"
      },
      "EnableDnsHostnames": {
        "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc.html#cfn-aws-ec2-vpc-EnableDnsHostnames",
        "PrimitiveType": "Boolean",
        "Required": false,
        "UpdateType": "Mutable"
      },
      "EnableDnsSupport": {
        "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc.html#cfn-aws-ec2-vpc-EnableDnsSupport",
        "PrimitiveType": "Boolean",
        "Required": false,
        "UpdateType": "Mutable"
      },
      "InstanceTenancy": {
        "Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-vpc.html#cfn-aws-ec2-vpc-instancetenancy",
        "PrimitiveType": "String",
        "Required": false,
        "UpdateType": "Immutable"
      }
    }
  }
}

}