code: def testClear(self):
      p = Pool()
      p.add("real.one", 1.0)
      p.add("real.two", 2.0)
      p.add("real.three.a", "a")
      p.add("real.three.b", "b")
  
      p.clear()
  
      self.assertEqualVector(p.descriptorNames(), [])
  
imports: from essentia_test import *
label_desc: Use image node_id 14 for calling the TestPool obj's underlying member method code with example usage: obj.testClear() without return types