code: public synchronized void unset(String name) {
  		String[] names = null;
  		if (!isDeprecated(name)) {
  			names = getAlternativeNames(name);
  			if(names == null) {
  				names = new String[]{name};
  			}
  		}
  		else {
  			names = handleDeprecation(deprecationContext.get(), name);
  		}
  
  		for(String n: names) {
  			getOverlay().remove(n);
  			getProps().remove(n);
  		}
  	}
docs: Unset a previously set property.