Add an option to disable default sample

When the scheme doesn't come with example, Redoc will automatically generate a sample by properties default value. This default sample isn't useful in most case and it's confusing to reader.

I'd like to write examples which represent real use cases in the OpenAPI definition and leave unimportant responses/responses without sample. But I didn't find a way to disable the sample. It is possible to add global option in the tool, or add OpenAPI extension to disable default sample?