Debug Groovy Map Key Hierarchy

mapStructure.groovy

def mapStructure(Map map, int layer = 0) {
    map.each { key, value ->
        println "${('\t' * layer) + key}: ${layer.toString()}"
        if(value.getClass() == LinkedHashMap.class) {
            mapStructure((Map)value, layer+1)
        }
    }
}

// Example usage:
/*
Map map = [
        input: [
                method: "POST",
                host: "hostname",
                requestURL: "https://www.whatever.com"
        ],
        content: "<xml>whatever</xml>",
        id: [ source1: '123456' ]
]

mapStructure(map)
*/

// Example output:
/*
input:
	method:
	host:
	requestURL:
content:
id:
	source1:
*/