toWords("a") == "a"
        toWords("aB") == "a b"
        toWords("ABC") == "abc"
        toWords("ABCThing") == "abc thing"
        toWords("ABC Thing") == "abc thing"
        toWords("123Thing") == "123 thing"
        toWords(".") == ""
        toWords("_") == ""
    }

    def "flattens maps and arrays"() {
        expect:
        flatten([[1], [foo: 'bar']]) == [1, 'bar']