@Override
    public String toString() {
        return String.format("Key: '%s' , default: %s (fallback keys: %s)",
                key, defaultValue, Arrays.toString(fallbackKeys));
    }
Returns the description of this option.

@return The option's description.
inlong-sort/sort-common/src/main/java/org/apache/inlong/sort/configuration/ConfigOption.java