code: def _set_up_pool_config(self):
      '''
      Helper to configure pool options during DatabaseWrapper initialization.
      '''
      self._max_conns = self.settings_dict['OPTIONS'].get('MAX_CONNS', pool_config_defaults['MAX_CONNS'])
      self._min_conns = self.settings_dict['OPTIONS'].get('MIN_CONNS', self._max_conns)
                  
      self._test_on_borrow = self.settings_dict["OPTIONS"].get('TEST_ON_BORROW', 
                                                               pool_config_defaults['TEST_ON_BORROW'])
      if self._test_on_borrow:
          self._test_on_borrow_query = self.settings_dict["OPTIONS"].get('TEST_ON_BORROW_QUERY', 
                                                                         pool_config_defaults['TEST_ON_BORROW_QUERY'])
      else: 
          self._test_on_borrow_query = Nonf _set_up_pool_config(self):
      '''
      Helper to configure pool options during DatabaseWrapper initialization.
      '''
      self._max_conns = self.settings_dict['OPTIONS'].get('MAX_CONNS', pool_config_defaults['MAX_CONNS'])
      self._min_conns = self.settings_dict['OPTIONS'].get('MIN_CONNS', self._max_conns)
                  
      self._test_on_borrow = self.settings_dict["OPTIONS"].get('TEST_ON_BORROW', 
                                                               pool_config_defaults['TEST_ON_BORROW'])
      if self._test_on_borrow:
          self._test_on_borrow_query = self.settings_dict["OPTIONS"].get('TEST_ON_BORROW_QUERY', 
                                                                         pool_config_defaults['TEST_ON_BORROW_QUERY'])
      else: 
          self._test_on_borrow_query = None
docs: Helper to configure pool options during DatabaseWrapper initialization.