code: @Override
  	public void createCacheFileAsync(final String fileNamePrefix, final Reader reader,
  			final CreateCompletionCallback callback) {
  		createCacheFileAsync(fileNamePrefix, new ReaderInputStream(reader, "UTF-8"), callback); //$NON-NLS-1$
  	}
docs: /* (non-Javadoc)
  @see com.ibm.jaggr.service.cache.ICacheManager#createCacheFileAsync(java.lang.String, java.io.Reader, com.ibm.jaggr.service.cache.ICacheManager.CreateCompletionCallback)