parseMultiPointText_() {
    if (this.match(TokenType.LEFT_PAREN)) {
      let coordinates;
      if (this.token_.type == TokenType.LEFT_PAREN) {
        coordinates = this.parsePointTextList_();
      } else {
        coordinates = this.parsePointList_();
      }
      if (this.match(TokenType.RIGHT_PAREN)) {
        return coordinates;
      }
    }
    throw new Error(this.formatErrorMessage_());
  }
@return {Array<Array<number>>} All points in a multipoint.
@private