public String getValue(ConfigOption<?> configOption) {
    return Optional.ofNullable(
            getRawValueFromOption(configOption).orElseGet(configOption::defaultValue))
        .map(String::valueOf)
        .orElse(null);
  }
Returns the value associated with the given config option as a string.

@param configOption The configuration option
@return the (default) value associated with the given config option
amoro-common/src/main/java/org/apache/amoro/config/Configurations.java