[Integer]         | typeHierarchyForInteger
        [Integer, Double] | typeHierarchyForInteger + typeHierarchyForDouble
        [Object]          | []
        [GroovyObject]    | []
    }

    static def getTypeHierarchyForDouble() {
        return maybeWithJava12ConstantTypes([Double, Number, Comparable, Serializable])
    }

    static def getTypeHierarchyForInteger() {