This defines the schema for .NET Core's runtimeconfig.json file.
Using Visual Studio, you can get auto-completion if you import the schema in your .JSON file like this:
{
"$schema": "https://gist.githubusercontent.com/natemcmaster/0bdee16450f8ec1823f2c11af880ceeb/raw/runtimeconfig.template.schema.json"
}