code: def getAllowedInstruments(self):
          
          service = self.getAnalysisService()
          if not service:
              return []
  
          instruments = []
          if self.getInstrumentEntryOfResults():
              instruments = service.getInstruments()
          if self.getManualEntryOfResults():
              for meth in self.getAllowedMethods():
                  instruments += meth.getInstruments()
  
          return list(set(instruments))
docs: Returns the allowed instruments for this analysis, either if the
          instrument was assigned directly (by using "Allows instrument entry of
          results") or indirectly via Method (by using "Allows manual entry of
          results") in Analysis Service edit view.
          :return: A list of instruments allowed for this Analysis
          :rtype: list of instruments