code: function fixParamsWithParenthesis(fixer) {
                  const paramToken = sourceCode.getTokenAfter(firstTokenOfParam);
  
                  /*
                   * ES8 allows Trailing commas in function parameter lists and calls
                   * https://github.com/eslint/eslint/issues/8834
                   */
                  const closingParenToken = sourceCode.getTokenAfter(paramToken, astUtils.isClosingParenToken);
                  const asyncToken = isAsync ? sourceCode.getTokenBefore(firstTokenOfParam) : null;
                  const shouldAddSpaceForAsync = asyncToken && (asyncToken.range[1] === firstTokenOfParam.range[0]);
  
                  return fixer.replaceTextRange([
                      firstTokenOfParam.range[0],
                      closingParenToken.range[1]
                  ], `${shouldAddSpaceForAsync ? " " : ""}${paramToken.value}`);
              }
docs: Remove the parenthesis around a parameter
  @param {Fixer} fixer Fixer
  @returns {string} fixed parameter