Actions.java 文件源码

/**
 * Combines provided actions into a single action stream
 *
 * @param a1 Action
 * @return Single action stream combined from provided actions
 */
@CheckResult
@NonNull
public static <T1, T2, T3> Action3<? super T1, ? super T2, ? super T3> combine(@NonNull Action3<? super T1, ? super T2, ? super T3> a1) {
    return a1;
}