code: def add_comment_to_issue(self, issue, comment, visibility=None):
          
          self.jira.add_comment(issue=issue, body=comment)
docs: Adds a comment to a specified issue from the current user.
  
              Arguments:
                  |  issue (string)  		| A JIRA Issue that a watcher needs added to, can be an issue ID or Key	|
                  |  comment (string)  		| A body of text to add as a comment to an issue   						|
                  |  visibility (string)  	| (Optional)															|
  
              Example:
                  |  *Keyword*        	|  *Parameters* | 									|		|
                  |  connect to jira      |  asimmons     |  options= {'http://devjira01'}    | 		|
                  |  ${issue}				|  create issue |  ${issue_field_dict}				|  True |
                  |  add comment to issue	|  ${issue}		|  Starting work on this issue		| 		|