code: public void delete(Tag.Builder tag, Collection<String> channelNames)
  			throws ChannelFinderException {
  		// TODO optimize using the /tags/<name> payload with list of channels
  		for (String channelName : channelNames) {
  			delete(tag, channelName);
  		}
  	}
docs: Remove the tag <tt>tag </tt> from all the channels <tt>channelNames</tt>
  
  @param tag
  - the tag to be deleted.
  @param channelNames
  - the channels from which to delete the tag <tt>tag</tt>
  @throws ChannelFinderException - throws exception