code: async def eval(self, text, opts=None, user=None):
          '''
          Evaluate a storm query and yield Nodes only.
          '''
          if user is None:
              user = self.auth.getUserByName('root')
  
          await self.boss.promote('storm', user=user, info={'query': text})
          async with await self.snap(user=user) as snap:
              async for node in snap.eval(text, opts=opts, user=user):
                  yield nodync def eval(self, text, opts=None, user=None):
          '''
          Evaluate a storm query and yield Nodes only.
          '''
          if user is None:
              user = self.auth.getUserByName('root')
  
          await self.boss.promote('storm', user=user, info={'query': text})
          async with await self.snap(user=user) as snap:
              async for node in snap.eval(text, opts=opts, user=user):
                  yield node
docs: Evaluate a storm query and yield Nodes only.