{
    "input": {

        "clientsActive" : true,
        "clients" : {
            "Acme" : {
                "clientId": "Acme",
                "index" : 1
            },
            "Axe" : {
                "clientId": "AXE",
                "index" : 0
            }
        },

        "data": {
            "bookId": null,
            "bookName": "Enchiridion"
        }
    },

    "spec": {
        "clientsActive" : {
            "true" : {
                "@(2,clients)" : {
                    // Test the ability to continue to match after doing a Transpose
                    "*" : {
                        "clientId" : "clientIds[@(1,index)]"
                    }
                },
                // Verify that it something does not exist, it does not output a null
                "@(2,pants)" : "pants"
            }
        },
        "data" : {
            // Verify the ability for Transpose to lookup and use a "valid" null, aka one that was in the input data
            "@bookId": "books.@bookName"
        }
    },

    "expected": {
        "clientIds" : [ "AXE", "Acme" ],
        "books" : {
            "Enchiridion" : null
        }
    }
}