code: public CreateIssueParams multipleListCustomField(CustomFiledItems customFiledItems) {
          for (Object id : customFiledItems.getCustomFieldItemIds()) {
              parameters.add(new NameValuePair("customField_" + customFiledItems.getCustomFieldId(),
                      id.toString()));
          }
          return this;
      }
docs: Sets the multiple list type custom field.
  
  @param customFiledItems the custom field identifiers and custom field item identifiers
  @return CreateIssueParams instance