code: def testVectorEmpty(self):
      p = Pool()
      p.add("foo.bar", zeros((10, 10)))
      p.add("foo.bar", array([[]]))
      self.assertEqualMatrix(
          p["foo.bar"], [zeros((10, 10)), array([[]])]
      )
  
imports: from essentia_test import *
label_desc: Use image node_id 29 for calling the TestPool obj's underlying member method code with example usage: obj.testVectorEmpty() without return types