code: def _master_tops(self):
          '''
          Evaluate master_tops locally
          '''
          if 'id' not in self.opts:
              log.error('Received call for external nodes without an id')
              return {}
          if not salt.utils.verify.valid_id(self.opts, self.opts['id']):
              return {}
          # Evaluate all configured master_tops interfaces
  
          grains = {}
          ret = {}
  
          if 'grains' in self.opts:
              grains = self.opts['grains']
          for fun in self.tops:
              if fun not in self.opts.get('master_tops', {}):
                  continue
              try:
                  ret.update(self.tops[fun](opts=self.opts, grains=grains))
              except Exception as exc:
                  # If anything happens in the top generation, log it and move on
                  log.error(
                      'Top function %s failed with error %s for minion %s',
                      fun, exc, self.opts['id']
                  )
          return ref _master_tops(self):
          '''
          Evaluate master_tops locally
          '''
          if 'id' not in self.opts:
              log.error('Received call for external nodes without an id')
              return {}
          if not salt.utils.verify.valid_id(self.opts, self.opts['id']):
              return {}
          # Evaluate all configured master_tops interfaces
  
          grains = {}
          ret = {}
  
          if 'grains' in self.opts:
              grains = self.opts['grains']
          for fun in self.tops:
              if fun not in self.opts.get('master_tops', {}):
                  continue
              try:
                  ret.update(self.tops[fun](opts=self.opts, grains=grains))
              except Exception as exc:
                  # If anything happens in the top generation, log it and move on
                  log.error(
                      'Top function %s failed with error %s for minion %s',
                      fun, exc, self.opts['id']
                  )
          return ret
docs: Evaluate master_tops locally