code: public LinkProperties addControlParameter(String key, String value) {
          this.controlParams_.put(key, value);
          return this;
      }
docs: <p>Adds any control params that control the behaviour of the link.
  Control parameters include Custom redirect url ($android_url,$ios_url),
  path for auto deep linking($android_deeplink_path,$deeplink_path) etc </p>
  
  @param key   A {@link String} with value of key for the parameter
  @param value A {@link String} with value of value for the parameter
  @return This Builder object to allow for chaining of calls to set methods.