[
        {
            "original": {
              "title": "Goodbye!",
              "author": {
                "givenName": "John",
                "familyName": "Doe"
              },
              "tags": [ "example", "sample" ],
              "content": "This will be unchanged"
            },
            "expected": {
              "title": "Hello!",
              "phoneNumber": "+01-123-456-7890",
              "author": {
                  "familyName": null
              },
            "tags": [ "example" ]
            },
            "target": {
              "title": "Hello!",
              "author": {
                  "givenName": "John"
              },
              "tags": [ "example" ],
              "content": "This will be unchanged",
              "phoneNumber": "+01-123-456-7890"
            }
        },
        {
            "original": {},
            "expected": {"a": {"b":"c"}},
            "target": {"a":{"b":"c"}}
        },
        {
            "original": {"a":"foo"},
            "expected": "bar",
            "target": "bar"
        },
        {
            "original": {"a":"foo"},
            "expected": null,
            "target": null
        },
        {
            "original": { "c": "d" },
            "expected": { "a": "b" },
            "target": { "a": "b", "c": "d" }
        }, 
        {
            "original": { "a": { "d": 2 } },
            "expected": { "a": { "d": 1 } },
            "target": { "a": { "d": 1 } }
        }, 
        {
            "original": { "a": "b", "c": "d" },
            "expected": { "c": null },
            "target": { "a": "b" }
        }
]