private static void setDefaultValues(
      File file, AttributeProvider provider, Map<String, ?> defaultValues) {
    Map<String, ?> defaults = provider.defaultValues(defaultValues);
    for (Map.Entry<String, ?> entry : defaults.entrySet()) {
      int separatorIndex = entry.getKey().indexOf(':');
      String view = entry.getKey().substring(0, separatorIndex);
      String attr = entry.getKey().substring(separatorIndex + 1);
      file.setAttribute(view, attr, entry.getValue());
    }
  }
Creates the set of providers the provider being tested depends on.
jimfs/src/test/java/com/google/common/jimfs/AbstractAttributeProviderTest.java