humble-video-noarch/src/main/java/io/humble/video/customio/HumbleIO.java
public static String map(String url, ReadableByteChannel channel)
  {
    return map(url, channel, null, DEFAULT_UNMAP_URL_ON_OPEN,
        DEFAULT_CLOSE_STREAM_ON_CLOSE);
  }
public static String map(String url, ReadableByteChannel channel)
  {
    return map(url, channel, null, DEFAULT_UNMAP_URL_ON_OPEN,
        DEFAULT_CLOSE_STREAM_ON_CLOSE);
  }
Maps a {@link ReadableByteChannel} to a URL for use by Humble.

@param url the URL to use.
@param channel the {@link ReadableByteChannel}
@return a string that can be passed to {@link Container}'s open methods.