@CanIgnoreReturnValue
    public Builder setSupportedFeatures(Feature... features) {
      supportedFeatures = Sets.immutableEnumSet(Arrays.asList(features));
      return this;
    }
Sets the given features to be supported by the file system. Any features not provided here
will not be supported.
jimfs/src/main/java/com/google/common/jimfs/Configuration.java