code: async def list_networks(request: web.Request) -> web.Response:
      
      try:
          networks = await nmcli.available_ssids()
      except RuntimeError as e:
          return web.json_response({'message': ' '.join(e.args)}, status=500)
      else:
          return web.json_response({'list': networks}, status=200)
docs: Get request will return a list of discovered ssids:
  
      GET /wifi/list
  
      200 OK
      { "list": [
          {
             ssid: string // e.g. "linksys", name to connect to
             signal: int // e.g. 100; arbitrary signal strength, more is better
             active: boolean // e.g. true; whether there is a connection active
             security: str // e.g. "WPA2 802.1X" raw nmcli security type output
             securityType: str // e.g. "wpa-eap"; see below
          }
        ]
      }
  
      The securityType field contains a value suitable for passing to the
      securityType argument of /configure, or 'unsupported'. The security
      field is mostly useful for debugging if you are unable to connect to
      the network even though you think you are using the correct security
      type.