code: def testEmpty(self):
      self.assertEqualVector(self.accumulate([]), [])
  
file_path: essentia/test/src/unittests/standard/test_realaccumulator_streaming.py
imports: from essentia_test import *
  from essentia.streaming import RealAccumulator
label_desc: Use image node_id 2 for calling the TestRealAccumulator_Streaming obj's underlying member method code with example usage: obj.testEmpty() without return types