请问下面的代码怎么跟踪接口调用。谢谢！

IPilzLicenseManager localIPilzLicenseManager = IPilzLicenseManager.Singleton.getInstance();

IPilzLicenseManager接口定义。

public abstract interface IPilzLicenseManager {
public abstract String getDummeyLicenseKey();

public abstract void setPilzAppVersion(int paramInt);

public abstract int getPilzAppVersion();

public abstract PilzLicense openLicense(String paramString);

public abstract int closeLicense();

public abstract boolean VerifyUpdateLicense(String paramString1,
String paramString2, String paramString3, boolean paramBoolean);

public abstract boolean updateFreeFields(String paramString1,
String paramString2, String paramString3, String paramString4);

public abstract boolean updateFreeFields(String paramString1,
String paramString2);

public abstract boolean checkLicenseValid();

public abstract PilzLicense getLicenseProperties();

public abstract String encrypt(String paramString);
}

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