code: def _parse_flowcontrol_send(self, config):
          
          value = 'off'
          match = re.search(r'flowcontrol send (\w+)$', config, re.M)
          if match:
              value = match.group(1)
          return dict(flowcontrol_send=value)
docs: Scans the config block and returns the flowcontrol send value
  
          Args:
              config (str): The interface config block to scan
  
          Returns:
              dict: Returns a dict object with the flowcontrol send value
                  retrieved from the config block.  The returned dict object
                  is intended to be merged into the interface resource dict