code: private static boolean isNotSREEntry(IRuntimeClasspathEntry entry) {
  		try {
  			final File file = new File(entry.getLocation());
  			if (file.isDirectory()) {
  				return !SARLRuntime.isUnpackedSRE(file);
  			} else if (file.canRead()) {
  				return !SARLRuntime.isPackedSRE(file);
  			}
  		} catch (Throwable e) {
  			SARLEclipsePlugin.getDefault().log(e);
  		}
  		return true;
  	}
docs: Replies if the given classpath entry is a SRE.
  
  @param entry the entry.
  @return <code>true</code> if the entry points to a SRE;
  <code>false</code> otherwise.