code: def check_precondition(self, key, value):
          '''
          Override to check for timeout
          '''
          timeout = float(value)
          curr_time = self.get_current_time()
          if curr_time > timeout:
              return True
          return Falsf check_precondition(self, key, value):
          '''
          Override to check for timeout
          '''
          timeout = float(value)
          curr_time = self.get_current_time()
          if curr_time > timeout:
              return True
          return False
docs: Override to check for timeout