// Property that defines what content types the printer can print natively. message SupportedContentType {

// Content type (e.g. "image/png" or "application/pdf"). Use */* if your
// printer supports all formats (required).
optional string content_type = 1;

// Minimum supported version of the content type if applicable (e.g. "1.5").
optional string min_version = 2;

// Maximum supported version of the content type if applicable (e.g. "1.5").
optional string max_version = 3;

}