spring package-info 代码
文件路径：/spring-core/src/main/java/org/springframework/util/backoff/package-info.java
/**
* A generic back-off abstraction.
*/
@NonNullApi
@NonNullFields
package org.springframework.util.backoff;
import org.springframework.lang.NonNullApi;
import org.springframework.lang.NonNullFields;