code: private InputStream getBundleMappingStream() {
  
  		InputStream is = null;
  		try {
  			is = getTemporaryResourceAsStream(PathNormalizer.concatWebPath(tempDirPath + "/", mappingFileName));
  		} catch (ResourceNotFoundException e) {
  			// Nothing to do
  		}
  		return is;
  	}
docs: Returns the bundle mapping file
  
  @return the bundle mapping file