question: private void putEntry ( String key , CacheHeader entry ) { if ( ! mEntries . containsKey ( key ) ) { mTotalSize += entry . size ; } else { CacheHeader oldEntry = mEntries . get ( key ) ; mTotalSize += ( entry . size - oldEntry . size ) ; } mEntries . put ( key , entry ) ; }
target:  Puts the entry with the specified key into the cache.