docs: def execute(self):
          """
              params = {
                  "ApexCode"          : "None",
                  "ApexProfiling"     : "01pd0000001yXtYAAU",
                  "Callout"           : True,
                  "Database"          : 1,
                  "ExpirationDate"    : 3,
                  "ScopeId"           : "",
                  "System"            : "",
                  "TracedEntityId"    : "",
                  "Validation"        : "",
                  "Visualforce"       : "",
                  "Workflow"          : ""
              }
          """
          if 'type' not in self.params:
              raise MMException("Please include the type of log, 'user' or 'apex'")
          if 'debug_categories' not in self.params:
              raise MMException("Please include debug categories in dictionary format: e.g.: {'ApexCode':'DEBUG', 'Visualforce':'INFO'}")
  
          request = {}
          if self.params['type'] == 'user':
              request['ScopeId'] = None
              request['TracedEntityId'] = self.params.get('user_id', config.sfdc_client.user_id)
          elif self.params['type'] == 'apex':
              #request['ScopeId'] = 'user'
              request['ScopeId'] = config.sfdc_client.user_id
              request['TracedEntityId'] = self.params['apex_id']
  
          for c in self.params['debug_categories']:
              if 'category' in c:
                  request[c['category']] = c['level']
              else:
                  request[c] = self.params['debug_categories'][c]
  
          request['ExpirationDate'] = util.get_iso_8601_timestamp(int(float(self.params.get('expiration', 30))))
  
          config.logger.debug(self.params['debug_categories'])
          config.logger.debug("Log creation reuqest--->")
          config.logger.debug(request)
  
          create_result = config.sfdc_client.create_trace_flag(request)
  
          config.logger.debug("Log creation response--->")
          config.logger.debug(create_result)
  
          if type(create_result) is list:
              create_result = create_result[0]
          if type(create_result) is not str and type(create_result) is not unicode:
              return json.dumps(create_result)
          else:
              return create_result