TiebreakerScript.groovy

class TiebreakerKey28 {
    int value

    int hashCode() {
        28
    }

    boolean equals(o) {
        if (this.is(o)) return true
        if (getClass() != o.class) return false

        TiebreakerKey28 key = (TiebreakerKey28) o

        if (value != key.value) return false

        return true
    }
}

HashMap<TiebreakerKey28, String> hashMap = new HashMap<>()

10.times {
    hashMap.put(new TiebreakerKey28(value: it), "hello for the $it time")
}