code: func (s *IssueService) UpdateIssue(jiraID string, data map[string]interface{}) (*Response, error) {
  	apiEndpoint := fmt.Sprintf("rest/api/2/issue/%v", jiraID)
  	req, err := s.client.NewRequest("PUT", apiEndpoint, data)
  	if err != nil {
  		return nil, err
  	}
  	resp, err := s.client.Do(req, nil)
  	if err != nil {
  		return resp, err
  	}
  
  	// This is just to follow the rest of the API's convention of returning an issue.
  	// Returning the same pointer here is pointless, so we return a copy instead.
  	return resp, nil
  }
docs: // UpdateIssue updates an issue from a JSON representation. The issue is found by key.
  //
  // https://docs.atlassian.com/jira/REST/7.4.0/#api/2/issue-editIssue