code: def delete_contribution(self, url):
          
  
          # first validate that this is a real contrib
          try:
              result = self.api_request(url)
  
              if 'url' in result and 'documents' in result:
                  self.api_request(result['url'], method='DELETE')
                  return True
          except:
              pass
  
          return False
docs: Delete the contribution with this identifier
  
          :rtype: bool
          :returns: True if the contribution was deleted, False otherwise (eg. if it didn't exist)