{
  "assemblies": [
    {
      "name": "grape",
      "sequence": {
        "type": "ReferenceSequenceTrack",
        "trackId": "grape_ref_seq",
        "adapter": {
          "type": "ChromSizesAdapter",
          "chromSizesLocation": {
            "uri": "grape.chrom.sizes.nonexist",
            "locationType": "UriLocation"
          }
        }
      }
    }
  ],
  "defaultSession": {
    "name": "Chrom sizes",
    "views": [
      {
        "id": "chrom_sizes",
        "type": "LinearGenomeView",
        "offsetPx": 0,
        "bpPerPx": 0.5,
        "displayedRegions": [
          {
            "refName": "chr1",
            "start": 0,
            "end": 23037639,
            "assemblyName": "grape"
          }
        ],
        "tracks": [
          {
            "type": "ReferenceSequenceTrack",
            "configuration": "grape_ref_seq",
            "displays": [
              {
                "type": "LinearReferenceSequenceDisplay",
                "configuration": "grape_ref_seq-LinearReferenceSequenceDisplay"
              }
            ]
          }
        ]
      }
    ],
    "widgets": {
      "hierarchicalTrackSelector": {
        "id": "hierarchicalTrackSelector",
        "type": "HierarchicalTrackSelectorWidget",
        "collapsed": {},
        "filterText": "",
        "view": "chrom_sizes"
      }
    },
    "activeWidgets": {
      "hierarchicalTrackSelector": "hierarchicalTrackSelector"
    }
  },
  "configuration": {
    "rpc": {
      "defaultDriver": "MainThreadRpcDriver"
    }
  }
}
