code: def getNumberOfRequiredVerifications(self):
          
          num = self.getField('NumberOfRequiredVerifications').get(self)
          if num < 1:
              return self.bika_setup.getNumberOfRequiredVerifications()
          return num
docs: Returns the number of required verifications a test for this
          analysis requires before being transitioned to 'verified' state
          :returns: number of required verifications