// 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;
}