question: public void flush ( ) { synchronized ( mDiskCacheLock ) { if ( mDiskLruCache != null ) { try { mDiskLruCache . flush ( ) ; } catch ( Throwable e ) { LogUtils . e ( e . getMessage ( ) , e ) ; } } } }
target:  Flushes 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.