求高手解答！？Android中的LicenseCheckerCallback接口中的方法加了参数

[rockyou666]

呵呵，直接看下源码，这是Android SDK中的源码：com_google_android_vending_licensing jar包中

public interface LicenseCheckerCallback {

    /**
     * Allow use. App should proceed as normal.
     * 
     * @param reason Policy.LICENSED or Policy.RETRY typically. (although in
     *            theory the policy can return Policy.NOT_LICENSED here as well)
     */
    public void allow(int reason);

    /**
     * Don't allow use. App should inform user and take appropriate action.
     * 
     * @param reason Policy.NOT_LICENSED or Policy.RETRY. (although in theory
     *            the policy can return Policy.LICENSED here as well ---
     *            perhaps the call to the LVL took too long, for example)
     */
    public void dontAllow(int reason);

    /** Application error codes. */
    public static final int ERROR_INVALID_PACKAGE_NAME = 1;
    public static final int ERROR_NON_MATCHING_UID = 2;
    public static final int ERROR_NOT_MARKET_MANAGED = 3;
    public static final int ERROR_CHECK_IN_PROGRESS = 4;
    public static final int ERROR_INVALID_PUBLIC_KEY = 5;
    public static final int ERROR_MISSING_PERMISSION = 6;

    /**
     * Error in application code. Caller did not call or set up license checker
     * correctly. Should be considered fatal.
     */
    public void applicationError(int errorCode);
}

记得以前的LicenseCheckerCallback接口中的allow,dontAllow,applicationError的方法中没有参数，更新了版本了吗？
那么这几个参数有什么用呢？
求高手解答！？