* Returns a string representation of this CharMappingItem including all fields.
     *
     * @return string representation of this object
     */
    @Override
    public String toString() {
        return "MappingItem [id=" + id + ", inputs=" + Arrays.toString(inputs) + ", output=" + output + ", newInputs="
                + Arrays.toString(newInputs) + ", newOutput=" + newOutput + "]";
    }

    /**