code: function validateSchema (api) {
    // Choose the appropriate schema (Swagger or OpenAPI)
    var schema = api.swagger
      ? require("swagger-schema-official/schema.json")
      : require("openapi-schema-validation/schema/openapi-3.0.json");
  
    var isValid = ZSchema.validate(api, schema);
  
    if (!isValid) {
      var err = ZSchema.getLastError();
      var message = "Swagger schema validation failed. \n" + formatZSchemaError(err.details);
      throw ono.syntax(err, { details: err.details }, message);
    }
  }
docs: Validates the given Swagger API against the Swagger 2.0 or 3.0 schema.
  
  @param {SwaggerObject} api