code: public Bundler put(String key, String value) {
      delegate.putString(key, value);
      return this;
    }
docs: Inserts a String value into the mapping of the underlying Bundle, replacing any existing value
  for the given key. Either key or value may be null.
  
  @param key a String, or null
  @param value a String, or null
  @return this bundler instance to chain method calls