original_string: public function delInterestGrouping($group_id = false)
      {
  
          $payload = array(
              'grouping_id' => (FALSE === $group_id) ? $this->grouping_id : $group_id
          );
  
          $apiCall = 'lists/interest-grouping-del';
          $data = $this->requestMonkey($apiCall, $payload);
          $data = json_decode($data, true);
          if (isset($data['error']))
              throw new MailchimpAPIException($data);
          else
              return true;
      }
code: public function delInterestGrouping($group_id = false)
      {
  
          $payload = array(
              'grouping_id' => (FALSE === $group_id) ? $this->grouping_id : $group_id
          );
  
          $apiCall = 'lists/interest-grouping-del';
          $data = $this->requestMonkey($apiCall, $payload);
          $data = json_decode($data, true);
          if (isset($data['error']))
              throw new MailchimpAPIException($data);
          else
              return true;
      }
code_tokens: public function delInterestGrouping ( $ group_id = false ) { $ payload = array ( 'grouping_id' => ( FALSE === $ group_id ) ? $ this -> grouping_id : $ group_id ) ; $ apiCall = 'lists/interest-grouping-del' ; $ data = $ this -> requestMonkey ( $ apiCall , $ payload ) ; $ data = json_decode ( $ data , true ) ; if ( isset ( $ data [ 'error' ] ) ) throw new MailchimpAPIException ( $ data ) ; else return true ; }
docstring: Delete an existing Interest Grouping - this will permanently delete all contained interest groups and will remove those selections from all list members
  
  @link http://apidocs.mailchimp.com/api/2.0/lists/interest-grouping-del.php
  @param int $group_id optional the interest grouping id
  @return boolean true on success
  @throws MailchimpAPIException
docstring_tokens: Delete an existing Interest Grouping - this will permanently delete all contained interest groups and will remove those selections from all list members