Sample avpr file

account.json

{
    "namespace":"org.sample",
    "protocol":"AccountService",
    "types":[
        {
            "name":"Account",
            "fields":[
                {
                    "name":"id",
                    "type":"long"
                },
                {
                    "name":"name",
                    "type":"string"
                },
                {
                    "name":"description",
                    "type":[
                        "null",
                        "string"
                    ],
                    "default":null
                }
            ],
            "type":"record"
        }
    ],
    "messages":{
        "addAccount":{
            "response":"Account",
            "request":[
                {
                    "name":"name",
                    "type":"string"
                },
                {
                    "name":"description",
                    "type":[
                        "null",
                        "string"
                    ]
                }
            ]
        }
    }
}