367     /**

   368      * CWriteableJavaRegistryPackageEntry::UsedUserDiskSpace gets the

   369      * amount of disk space taken by the installed application.

   370      *

   371      * @since S60 v5.1

   372      * @return Returns the size of used disk space in bytes.

   373      */

   374     IMPORT_C TInt64 UsedUserDiskSpace() const;

   375 

   376     /**

   377      * Tells if the application package is pre-installed.

   378      *

   379      * If a pre-installed application package is upgraded,

   380      * it remains marked as pre-installed.

   381      *

   382      * If a pre-installed application package is uninstalled

   383      * and later installed again, it is no more marked as

   384      * pre-installed.

   385      *

   386      * @since S60 v5.1

   387      * @return ETrue if the application suite is pre-installed,

   388      *         EFalse otherwise.

   389      */

   390     IMPORT_C TBool IsPreinstalled() const;