Install a CaptureFilter in a Chain

config.json

{
    "heap": {
        "objects": [
          {
              "name": "CapturingChain",
              "type": "Chain",
              "config": {
                  "filters": [ "Capture" ],
                  "handler": "Forwarder"
              }
          },
          {
               "name": "Capture",
               "type": "CaptureFilter",
               "comment": "Capture both the request and the responses in a file",
               "config": {
                   "file": "/tmp/gateway.log",
                   "captureEntity": true
               }
          },
          {
              "name": "Forwarder",
              "type": "ClientHandler",
              "config": { }
          }
        ]
    },
    "handlerObject": "CapturingChain",
    "baseURI": "http://localhost:80"
}