code: def testVectorEmpty(self):
      self.vectorTest(3, 0, 5)
      self.vectorTest(0, 6, 5)
      self.vectorTest(3, 5, 0)
  
file_path: essentia/test/src/unittests/standard/test_multiplexer_streaming.py
imports: from essentia_test import *
  from essentia.streaming import Multiplexer
label_desc: Use image node_id 7 for calling the TestMultiplexer_Streaming obj's underlying member method code with example usage: obj.testVectorEmpty() without return types