code: def testLin2DbLowX(self):
      self.assertAlmostEqualVector(
          UnaryOperator(type="lin2db")(self.testInputLowX),
          [-100.0, -100.0, -100.0, -100.0],
      )
  
imports: from essentia_test import *
label_desc: Use image node_id 11 for calling the TestUnaryOperator obj's underlying member method code with example usage: obj.testLin2DbLowX() without return types