parseLineStringText_() {
    if (this.match(TokenType.LEFT_PAREN)) {
      const coordinates = this.parsePointList_();
      if (this.match(TokenType.RIGHT_PAREN)) {
        return coordinates;
      }
    }
    throw new Error(this.formatErrorMessage_());
  }
@return {Array<Array<number>>} All points in a linestring.
@private