code: func GetGzipOption(defaultValue bool, options map[string]interface{}) bool {
  	gzipOpt := options["gzip"] // we only need that, so don't create new map to keep the options.
  	if b, isBool := gzipOpt.(bool); isBool {
  		return b
  	}
  	return defaultValue
  }
docs: // GetGzipOption receives a default value and the render options map and returns if gzip is enabled for this render action