code: public void set(Tag.Builder tag, String channelName) throws ChannelFinderException {
  		Collection<String> channelNames = new ArrayList<String>();
  		channelNames.add(channelName);
  		wrappedSubmit(new SetTag(tag.toXml(), channelNames));
  	}
docs: Destructively set tag <tt>tag</tt> to channel <tt>channelName</tt> and
  remove the tag from all other channels.
  
  @param tag
  - the tag to be set.
  @param channelName
  - the channel to which the tag should be set on.
  @throws ChannelFinderException - channelfinder exception