question: public boolean onSaveSnapshot ( Bundle mSavedInstanceState ) { Bundle blocklyState = new Bundle ( ) ; ByteArrayOutputStream out = new ByteArrayOutputStream ( ) ; try { mWorkspace . serializeToXml ( out ) ; blocklyState . putByteArray ( SERIALIZED_WORKSPACE_KEY , out . toByteArray ( ) ) ; } catch ( BlocklySerializerException e ) { Log . w ( TAG , "Error serializing workspace." , e ) ; return false ; } finally { try { out . close ( ) ; } catch ( IOException e ) { } } mSavedInstanceState . putBundle ( SNAPSHOT_BUNDLE_KEY , blocklyState ) ; return true ; }
target:  Saves a snapshot of current workspace contents to a temporary cache file, and saves the filename to the instance state bundle.