code: def accumulate(self, input, size=1):
      # NB: size is not used anymore as RealAccumulator got smarter :-)
      accu = RealAccumulator()
      pool = Pool()
      gen = VectorInput(input)
      gen.data >> accu.data
      accu.array >> (pool, "accu")
      run(gen)
      if not pool.descriptorNames():
          return []
      return pool["accu"]
  
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 1 for calling the TestRealAccumulator_Streaming obj's underlying member method code with example usage: obj.accumulate(input, size) and returns: pool, list