code: @Cmd
  	public void set(final String key, final int value) {
  		doSet(key, String.valueOf(value));
  	}
docs: Sets a property to a given value. Both key and value can contain properties. The following
  rules apply:
  <ul>
  <li>the key will be evaluated on execution of the closure</li>
  <li>the value will be evaluated on querying the property</li>
  <li>if the value should also be evaluated on execution you need to use
  {@link #setNow(String, String)}</li>
  </ul>
  
  @param key
  the config key
  @param value
  the value to set