Example config file:

{
    "filename": "outfile.json",
    "publishers": [
        {
            "id":   "SmartBearSoftware",
            "name": "SmartBear Software",
            "extensions": [
                {
                    "id":   "vscode-swaggerhub",
                    "name": "Swaggerhub for VS Code"
                }
            ]
        },
        {
            "id":   "ms-vscode",
            "name": "Microsoft",
            "extensions": [
                {
                    "id": "cpptools",
                    "name": "C/C++ for Visual Studio Code"
                },
                {
                    "id": "PowerShell",
                    "name": "PowerShell Language Support for Visual Studio Code"
                }
            ]
        }
    ]
}