@Override
  public boolean equals(Object o) {
    if (this == o) {
      return true;
    } else if (o != null && o.getClass() == ConfigOption.class) {
      ConfigOption<?> that = (ConfigOption<?>) o;
      return this.key.equals(that.key)
          && (this.defaultValue == null
              ? that.defaultValue == null
              : (that.defaultValue != null && this.defaultValue.equals(that.defaultValue)));
    } else {
      return false;
    }
  }
Returns the description of this option.

@return The option's description.
amoro-common/src/main/java/org/apache/amoro/config/ConfigOption.java