import com.google.gag.annotation.remark.OhNoYouDidnt; //导入依赖的package包/类
@Hack
@OhNoYouDidnt
private static Optional<Plugin> defer(final ListableBeanFactory factory, final String typeName) {
    return Optional.of(typeName)
            .filter(DefaultPluginResolver::exists)
            .map(throwingFunction(DefaultPluginResolver::forName))
            .map(type -> defer(factory, type));
}
 

import com.google.gag.annotation.remark.OhNoYouDidnt; //导入依赖的package包/类
@RequestMapping(path = "/handler-invalid-param", method = POST)
public void validRequestParam(@RequestBody final UserRequest user) {
    @Hack("I couldn't make Spring throw this implicitly using annotations...")
    @Facepalm
    @OhNoYouDidnt
    final Validator validator = Validation.buildDefaultValidatorFactory().getValidator();
    final Set<ConstraintViolation<UserRequest>> violations = validator.validate(user);
    throw new ConstraintViolationException(violations);
}
 

import com.google.gag.annotation.remark.OhNoYouDidnt; //导入依赖的package包/类
/**
 * This is required to workaround missing support for {@link com.fasterxml.jackson.annotation.JsonAnySetter} on
 * constructors annotated with {@link com.fasterxml.jackson.annotation.JsonCreator}.
 *
 * @param key   the custom key
 * @param value the custom value
 * @see <a href="https://github.com/FasterXML/jackson-databind/issues/562">Jackson Issue 562</a>
 */
@Hack
@OhNoYouDidnt
void set(final String key, final Object value) {
    parameters.put(key, value);
}