load API Spec from json file

[michaeladixon]

Is there a way to load the json spec from a filepath in the documentgenerator?

"runtime": "Net50",
"defaultVariables": null,
"documentGenerator": {
"fromDocument": {
"json": "{LOAD FROM A FILEPATH?}",
"url": "http://redocly.github.io/redoc/openapi.yaml",
"output": null,
"newLineBehavior": "Auto"
}
},