code: void release() {
  		if (mCurrentRequests != null) {
  			synchronized (mCurrentRequests) {
  				mCurrentRequests.clear();
  				mCurrentRequests = null;
  			}
  		}
  
  		if (mDownloadQueue != null) {
  			mDownloadQueue = null;
  		}
  
  		if (mDownloadDispatchers != null) {
  			stop();
  
  			for (int i = 0; i < mDownloadDispatchers.length; i++) {
  				mDownloadDispatchers[i] = null;
  			}
  			mDownloadDispatchers = null;
  		}
  
  	}
docs: Cancels all the pending & running requests and releases all the dispatchers.