question: public void close ( ) { synchronized ( mDiskCacheLock ) { if ( mDiskLruCache != null ) { try { if ( ! mDiskLruCache . isClosed ( ) ) { mDiskLruCache . close ( ) ; } } catch ( Throwable e ) { LogUtils . e ( e . getMessage ( ) , e ) ; } mDiskLruCache = null ; } } }
target:  Closes the disk cache associated with this ImageCache object. Note that this includes disk access so this should not be executed on the main/UI thread.