humble-video-noarch/src/main/java/io/humble/video/customio/HumbleIO.java
public static String map(String url, IURLProtocolHandler handler)
  {
    return map(url, handler, DEFAULT_UNMAP_URL_ON_OPEN);
  }
public static String map(String url, IURLProtocolHandler handler)
  {
    return map(url, handler, DEFAULT_UNMAP_URL_ON_OPEN);
  }
Maps a {@link IURLProtocolHandler} to a url that Humble can open.

{@link #unmap(String)} will be called automatically after this URL is
opened.

@param url the unique string to use for the mapping.
@param handler the handler
@return a string that is suitable for passing to {@link Container}'s open
methods.