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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete_issue(self, issue_id, params=None):
 """Deletes an individual issue. If the issue has sub-tasks you must set the deleteSubtasks=true parameter to delete the issue. You cannot delete an issue without deleting its sub-tasks. Args: issue_id: params: Returns: """

        return self._delete(self.API_URL + 'issue/{}'.format(issue_id), params=params)